I remember how post Gorbachev, one company after another made the decision that it was safe enough (in the sense of property not being arbitrarily confiscated, or sudden changes in the tax laws) to do business in the newly separated states of what had been the USSR. It was a gradual thing. The first ones putting a toe in the water to see, finding it OK, staying longer term - and eventually the network effect meant that many other Western companies decided it was safe enough for them.

Think of it like at the beach on a brisk day. People gradually go in, braver ones first. But as soon as there's a shark in the water, there's a mad scramble to get out.

That said, I suspect the most lasting damage will be from the exodus of petroleum extraction companies. I'd expect they've already written off their capital equipment. No idea what Russia might do to coax them back.

Not an analyst, just an old guy who was really rooting for Gorbachev to turn the disaster that was the USSR around. He was trying to do something heroic. (and he's still a hero in my book.) We in the US were just too damn slow to actually believe what he was doing and let it bellyflop (yet another bit of lasting damage from Reagan). Sigh...