Monopoly should rarely, if ever, last more than 45 minutes. Assuming Of Course you are playing by the rules. All properties landed on must sell - even if by auction, no free parking payout, chance cards are not optional, no banker loans, and there are a finite number of houses which caps development for the late-comers.
It's as ruthless and unpleasant as a game of Sorry but that's the point, capitalism is only great when you're winning.
You are exactly right, because Monopoly was literally invented as a propaganda device to show how awful capitalism is. The game was literally meant to be unpleasant and soul-draining. But... something went wrong. People took it at face value, and claim to be enjoying the experience. Stockholm Syndrome?
It's as ruthless and unpleasant as a game of Sorry but that's the point, capitalism is only great when you're winning.