Any concrete evidence of any of that outside of a few companies "exploring" the move? For most companies it's a non-starter

On a very small personal/hobby level: backblaze (which i like as a company) lost my business, moved stuff over to a European company. I'm not a multi million dollar business but I've started to do what i can.

Would have loved to visit the US and see all the things it has to offer, but absolutely not planning to in this climate. I think the US is currently at billions lost in just Canadian tourism?

Well, they really, really, really want it to be true, so surely that means it practically is.