I think you're making a mistake comparing 100 hours of a single game (Diablo) to an entire category of TV. A more apt comparison would be comparing 100th hour

I think you're making a mistake comparing 100 hours of a single game (Diablo) to an entire category of TV. A more apt comparison would be comparing 100th hour of Diablo vs 100th hour of a single sitcom, which by then you may be on your second watchthrough and have already got everything out of it that you could.