All that needs to be done is to produce a game that will remain playable if the company shuts down. Simple as that. It doesn't need to phone home anywhere, it doesn't require an internet connection, it just... turns on and plays.
At that point, any company can just fold whenever they'd like without having to do anything in this area, and everyone who bought the game can breathe easily, double-click their icon and start playing while the publisher's employees go look for other jobs.
If you have a game that's available in multiple regions published by different companies, then the "playable game" will start competing with the still published game in other regions.
This creates financial risk for the developer of the game (in the original region). They might be better off not releasing the game in the US/EU to avoid this risk. Many KR and CN games already don't release globally or it's done as some kind of afterthought.
Does the pattern of licensing out games to third parties for foreign publication even exist anymore? It was obviously very common in the pre-internet, and still extant in the early-mid internet era, but these days my impression is that it's ~universal that if a game has a global release, the studio itself or a direct subsidiary is handling the translations and publication, not introducing an unrelated middleman who gets a huge cut of it. I can think of dozens of games I've played in the last decade that fit this pattern and zero counterexamples.
All that needs to be done is to produce a game that will remain playable if the company shuts down. Simple as that. It doesn't need to phone home anywhere, it doesn't require an internet connection, it just... turns on and plays.
At that point, any company can just fold whenever they'd like without having to do anything in this area, and everyone who bought the game can breathe easily, double-click their icon and start playing while the publisher's employees go look for other jobs.