It’s not an all or nothing outcome. And I’m not talking about Google or Apple leaving. There are many companies which have dev offices in Russia, they would be less likely to hire new employees in Russia if they believed they can be arbitrarily imprisoned for random reasons.
Just look at what’s happening in Belarus in the last year (IT companies started fleeing to neighboring countries)
> likely result in many other western IT firms closing their offices and leaving
That's just naive. Russia and China are huge markets. Apple and Google are not going anywhere unless their hands are forced.