So who gets to be the arbiter of how much time $70 is worth?

You?

The companies making the games?

Why should they get to destroy games—gone, forever, with no chance of retrieval or resurrection—that hundreds of people put their time and love into, and millions of people want to play, just because they think it'll make this quarter's stock price numbers look better?

Copyright was created to protect the rights of the creator for a limited time to promote the useful arts. Creations are supposed to become part of the public domain once the creator is no longer getting use out of them. Game companies want to break that bargain, scorched-earth style, and ensure that no one can ever use the things that they create to make anything new.