Otherwise they should be forced to state the game is a rental not purchased if it requires a server that may shut down.
But that is what they already do. Currently this might be hidden in the EULA, that no one reads, but even making this plainly visible during purchase wouldn’t change much. I is not like the players have much choice when they want to play that specific game.
Non-toxic glue would be starch or gelatine - both used as base of some ‘real glues’, both with valid culinary use, including exactly this use case. We just don’t call those ‘glue’ in this context.