So if the publisher goes kaputz or they just decide to stop supporting the game your copy no longer works.
F*ck that. I will never buy any game that uses this (my PC isn't very up-to-date so I guess I wouldn't anyway but ignore that). I can't stand this bullsh!t idea that we just pay for a licence to use intellectual property. No, I buy a copy and I own it and can use that copy forever unless I somehow break it. I have no right to make a copy and distribute it to millions of strangers. I have no right to claim I'm the author of the content. I have no right to make copies and sell it or use any part of it in my own commercial IP without paying for it. But I have every right to buy a product, do what I want with it regarding personal use, and expect it to work for as long as I want provided I take good care of it and it doesn't die on me due to wear and tear.
Can you imagine is they tried this kind of sh!t with other products? Imagine a car where the manufacturer went under or was bought out by a company that no longer wanted to support certain models and suddenly every Ford vehicle made before 1990 no longer works and it's against the law for any mechanic to fix it. That's realy what this stuff is. It isn't about piracy. It probably was at first but they soon realized what they really wanted was the ability to have complete control over a product even after it was sold. They want the ability to break the product when they wish and force you to buy a new one. With digital content this isn't hard to do. The only reason cars and washing machines and toasters don't have it is because it's too hard to do.