That’s just wrong. They just sell you a license and provide a DRM free game. You are not supposed to continue playing the game if the publisher terminates your license. They just give you the ability to do it, but it has no legal value
As a dev, I can assure you that all those small details arn’t as easy to implement as you might think. That one would probably require 1 or 2 hours of work
Brotato