Virtualization has been one of the most transformative technologies in the modern IT era. For two decades, it has quietly underpinned resilience, efficiency, scalability and consistency across enterprise environments. It enabled us to consolidate sprawling server estates, enhance reliability, accelerate provisioning and reduce waste. In many ways, virtualization became the “invisible foundation” that allowed digital transformation to flourish.

But what happens when that foundation begins to shift beneath us?

In our recent CIO WaterCooler digital boardroom, SUSE’s cloud‑native specialist Nelson Kinsford explored this question — and articulated a reality many CIOs are now confronting: virtualization, once the hero of infrastructure, has become a source of cost pressure, risk, and diminishing strategic returns.
His message was clear: it is time for CIOs and IT leaders to reassess their relationship with the hypervisor.

When Innovation Turns Into Interrogation

Nelson’s narrative began by reframing virtualization as a long‑term relationship — one that started with genuine excitement and tangible benefits. Virtualization helped us extract value from under‑utilised hardware, dramatically improve reliability, and modernise infrastructure management through capabilities like templating, snapshotting and automated provisioning.

But over the past two years, this relationship has soured.

Acquisition‑driven uncertainty has reshaped licensing models, reduced support, introduced mandatory bundling, and—most importantly—inflated the cost base. Kinsford described a shift away from partnership into something more akin to interrogation: vendors demanding exhaustive core counts, imposing rigid contracts and pushing organisations into features and platforms they neither requested nor needed.

For CIOs, the consequences have been real: innovation budgets frozen, transformation paused, and investment redirected simply to maintain operational continuity.

This is not sustainable—not strategically, not financially, and not operationally.

The Hidden Cost: Innovation Paralysis

What often gets missed in conversations about infrastructure is the indirect opportunity cost. Every increase in licensing spend to “keep the lights on” is a pound not spent on:

Cloud optimisation
Developer enablement
AI adoption
Modernisation programmes
Experience transformation

In other words: the VM tax has become an innovation tax.

Nelson highlighted how organisations are now struggling with the tension between maintaining legacy virtual estates and progressing toward cloud‑native architectures. Many workloads will not be containerised in the near future — some will never be — making a purely cloud‑only or container‑only strategy unrealistic.

This leaves CIOs in a holding pattern unless they rethink the underlying model.

The Case for Open Source as a Strategic Reset

One of the strongest themes from the session was the argument for open‑source‑led virtualization as a way to reclaim control.

This isn’t about ideology — it’s about architecture, economics and sovereignty.

1. Avoiding Lock‑In

Open‑source platforms allow organisations to adopt industry‑standard technologies (like Kubernetes, KubeVirt and Multus) that remain portable across vendors and environments. This ensures decisions are made for business value — not vendor constraints.

2. Extending the Life of Existing Investments

Unlike many proprietary HCI stacks requiring specialised hardware, open‑source virtualization platforms such as Harvester work with a wide range of commodity systems and existing SANs. This maximises ROI on current infrastructure rather than forcing premature refresh cycles.

3. Unifying the Future with the Present

One of the session’s most compelling insights was the vision of an environment where VMs and containers co-exist under a unified operating model. Not competing. Not siloed. Unified.

This model allows organisations to modernise at their own pace, without artificial deadlines or enforced migrations.

4. Talent Strategy Becomes Simpler

Kinsford emphasised an often‑overlooked advantage: Kubernetes and cloud‑native engineers are a far larger, more easily accessible talent pool than those tied to proprietary systems. Standardisation drives efficiency not just in operations, but in recruitment, upskilling and strategic scalability.

Sovereignty and Supply Chain Risk Are Entering the Conversation

Although rarely the headline driver, digital sovereignty is becoming an increasingly relevant factor. Kinsford noted that across Europe, organisations are reconsidering where and how their critical infrastructure is sourced and supported.

SUSE’s position as a major European open‑source engineering organisation gives CIOs an alternative to the concentration of control within a handful of global hyperscalers and proprietary vendors.

Sovereignty, Nelson argued, is not a political concept — it’s a risk‑mitigation lens, ensuring that:

the business is not dependent on a single geography,
the software supply chain remains transparent, and
strategic autonomy is preserved.

Three Steps Toward a Better Model

We outlined a simple but powerful three‑step approach for CIOs looking to regain control:

1. Deploy a modern, open virtualization platform

Harvester provides a familiar hypervisor deployment model but builds on open-source foundations and integrates directly with Kubernetes.

2. Start with the low‑risk, easy‑to‑migrate workloads

Not every VM needs to move first. Choose predictable, well‑behaved workloads and progressively build confidence.

3. Breathe — and reallocate innovation capital

Once the VM tax is reduced, CIOs can begin redirecting budget toward actual transformation rather than maintenance.

Why This Moment Matters

The overarching message was unmistakable: virtualization is now a strategic issue, not an infrastructure one.

CIOs cannot treat the coming years as business‑as‑usual:

Licensing changes will accelerate.
End‑of‑life deadlines (not least for vSphere 8 in 2027) are fixed.
Support models will continue to evolve.
Innovation demands will not slow down.

This is not a question of whether organisations should modernise — but how, and on whose terms.

In5 Takeaways for CIOs

Reassess virtualization through a risk and cost lens, not a comfort lens.
Behavioural inertia is no longer a strategy.
Adopt open‑source infrastructure to restore control and portability.
This future‑proofs the estate without mandating a rewrite of everything.
Unify VM and container strategies rather than treating them as competing domains.
This reduces operational overhead and accelerates modernisation.
Protect innovation budgets by reducing dependency on proprietary pricing cycles.
Stability in cost creates stability in transformation.
Start the transition early — before deadlines force your hand.
Strategic timing is only possible before the clock runs out.

Mitigating the Unexpected Cost Impact of Virtualization: Why CIOs Must Rethink Their Relationship with the Hypervisor

When Innovation Turns Into Interrogation

The Hidden Cost: Innovation Paralysis