> Basically you can't actually unwind the sanctions, just like you can't unbomb a Ukrainian village. If it gets bad enough then there's surely a point of no return somewhere.

The longer things go on, the higher the perceived risk will be for companies returning, but there will always be an incentive for companies to return to take advantage of arbitration opportunities, considering Russia's depressed state. Whether they back down sooner, later, or never, is just risk companies need to price in when doing business there. Changes in the risk will change the benefits to the Russian people, and the profiles of the companies that show up in their markets, but hell, even Indonesia gets trade.

There is never a point of no return, not so long as Russia has a resource to trade.