and the only way for this to happen is for the invader to go back to where they came from, and never return
I agree. But riddle me this ...
If the Russian population only know what TASS tells them, do they a) support their hero president who is liberating their friends from Nazi aggressors, or b) tear down the machinery that gets them tarred with the same brush are the minority causing all the harm ? If you choose b) then I think you need your faculties testing.
However, if you keep providing a means for the population to see what's really going on - the mass shelling/bombing of civilians, the shelling of schools, the outright murder of people just trying to get away, ... Do you think the population are likely to have a different view ?
So yes, I agree with these businesses - while there will be some harms, the benefits of them continuing to provide services that help anyone but the Russian government and military machinery will far outweigh those harms.
Sadly, I suspect it will have to get a lot, lot worse before Putin's friends will turn on him - and even then it will be to replace him with someone who will still keep them in their power (and privilege), but without being extreme enough to cause all the aggro.