Digital sovereignty is usually discussed in grand terms: autonomy, independence, strategic capacity. The more sober question is smaller and harder: who can still leave?
Sovereignty does not begin with owning a data centre but with switching costs. How long does it take to export data in an open format? Which parts of a system depend on proprietary interfaces? Who still understands the configuration once the contract ends?
Independence that is never tested is merely a claim.
For organisations this suggests a simple exercise: plan the exit before you need it. Not as a declaration of distrust towards a provider, but as the condition for negotiating with it as an equal.
