I am in the middle of this - my audit committee just told me we need an exit plan "just in case".

I don't think this is practically possible. The governments are currently focusing on enabling sovereign clouds - there is real work in France and the Netherlands that I am familiar with.

However, almost any company uses a lot of SaaS stuff - also for very core capabilities such as IdP, employee productivity, not to mention the boring stuff - CRMs, ERPs, payment, etc.

Some (all, maybe?) have non-US variants, but as anyone who ever worked through an ERP upgrade or a CRM replacement - theoretically trivial exercises - this will be hell on earth.

And that does not begin to address the questions such as next gen productivity tools such as frontier models for coding. If Anthropic, Google and OpenAI decided to shut down the Europeans, we'd be screwed for a while.

On the positive side, the absolute toxic stuff that tech companies brought to the world - shorts, social media networks - would for a while be inaccessible too, so there is that.