Boy, do you have that wrong. Yes, certainly, there have been some costly stinkers by the movie industry, but it is somewhat self-correcting. Producers, directors, and even actors involved in costly stinkers don't get offered as many movies/paychecks as before. They even have a phrase for it, "box office poison."
The corrective in MLB is that owners can change and CBO's and managers and even coaches can be fired. But the biggest costs, the players, keep getting paid IAW their contracts, some of which are beyond the dreams of avarice.
I've been a Sox fan since 1949, but I've only actually been to Fenway Park twice. Terrible seats, both times--and expensive, of course. Never going back.
Once Red Sox baseball became available on cable and/or the internet--over 20 years ago--I signed up every year to watch all the Sox games. At a very reasonable price--even though those stupid blackout restrictions keep me from watching the Sox any time they play the Nationals, Orioles, or Braves. So, even in a down season, I can't complain too much.
The fans who go to the games, however, get screwed. The price of my online season ticket is what they pay for every single game they watch in person.
And of course the media encourage gargantuan player contracts because they are grist for the mill--a good story. They always say, "the owners are rich. They can afford it." But they are dead wrong! The owners almost always pass the increased player costs onto the fans.