Yeah but I assume vast majority simply works from remote for the same companies they did?

I know a couple of people who do that, but unless you settled in a really cheap country (for Russians that would likely be Armenia or Kazakhstan), you would really struggle to make ends meet with a Russian salary. And IT-folks who are used to luxury in Russia do not like that :) Also in countries with structured laws for social security, residence permits, pensions etc., you will most likely be caught for doing shady things (not paying local taxes or not paying social contributions). And if you do pay them, you are even more financially screwed. E.g. in Germany an employed person who is not supported by a local employer in paying social security would give away well over a half of their salary. So… either you REALLY live a shady life / life in a “developing” country with no tax control or you have to integrate and find a local / unsanctioned job. Maybe not right away, but it has been >4 years, most people have done this already. There are really little incentives to stay employed in Russia. Of course, there are companies who moved themselves (ex-Yandex parts, Jetbrains, etc). But they are now registered / taxed / employing elsewhere. Even if operating partially in Russian language.

Russian payment systems are barely supported in the other world, so its kinda hard to work remotely and get paid in roubles