That is what happened with German assets during World War 1. One of the reasons why there are two Merck companies today for example.
I don't expect "boots on the ground" because I wouldn't want to send anyone to their death even if they are young and ignorant so willing to do so.
But hell, the least we can do is make Russia disappear from everything else and close down their world. No travel, no assets outside of Russia to any other country.
They aren't China, we can do that to Russia. China would be a nightmare but not Russia.
They aren't leaving Ukraine ever. Are all the events and cancellations just waiting for things to "shake out"? It's basically forever. Or at least Putin's lifetime but who know who is waiting in the wings.