Because people will pay it, it’s entertainment, the cheap days are over. If you want an experience you need to pay for it

The supply is relatively fixed. The number of NFL seats has grown somewhat since 1990 because there are a few new teams, the season is a little longer, and lots of teams have built new stadiums with a little bit more capacity. But the supply of annual NFL seats is still similar to what it used to be.

But meanwhile, top quartile income Americans earn way (35% more inflation-adjusted), and there are 40% more of them since 1990. This is why the average NFL seat is $170 and the NFL sold out almost every game last year.

You'll notice this in all kinds of areas. Airliners are filling their planes with a greater and greater percentage of first class seating for example. The top 25% of american earners just have an insane amount of spending power.

Better use this money to buy an index fund or etf.