Half of Reddit: They aren't!! Game prices don't even match inflation!! The first Legend of Zelda game cost $80!! Games should be $200 or more today, so we're actually fortunate!!

The other half of Reddit: It's the greedy, corporate, quarterly profit focused bastards!! DLC and micro transactions have fucked everything!!

My own take is that most games are somewhat overpriced, but not excessively so. And some games have far more value than others, so they really shouldn't all cost the same.