Edit: also stadiums, but issues with building new stadiums are often caused by bureaucracy. Also the deals from bettong sites are not that great to be deciding factor of club can build a new stadium or not.
But the amount of money a random premier league team gets for their league is tenfold, so you still will struggle to compete.
This is one of the reasons there's a handful of non-premier league teams that have reached the UEFA champions league final in the last 10-20 years, while in the 80s you had random teams from all europe winning the Champion's Cup.
Concentration of wealth without NBA-inspired salary caps is self reinforcing and killing European footbal.
They absolutely hate how football is a business but they want the 100 million eurodollar striker!