The idea that economic effects compound over time isn't copium, though.
If you lose 1 or 2% of your expected economic growth in a year, it's not too bad. Over the course of 10, 15, 20, 30 years, though? That's a lot of lost money.
But if your point is that not enough economic damage has been caused to Russia, then on that I agree. Fuck any company still trading with them. The EU is the world's largest single market, they have clout, it's about time they start using it more.