No one I know that enjoys Monopoly (I don't know anyone who loves it) has significant house rules. It's a mediocre game by almost any metric but house rules almost universally make it worse, not better.
Maybe that's because everyone that's played any other boardgame made the last 10 years has abandoned monopoly completely since it's not a great game.
I also disagree that one cannot fix some of its many, many flaws with house rules. Remember that the spirit of the original rules was a game made as an anti-capitalist statement, not to be a fun experience.
Most of the popular house rules make it worse like $50 on Free Parking or allowing people to build houses when the supply is empty and not having auctions. It certainly has a big luck component compared to more modern games but it's really not that bad.