It’s only a problem if you think of “Europe” as your league. I would be FAR more concerned about the teams that win their domestic title every year than whether or not they can compete against other clubs in the CL. Every country except England has one or two completely dominant teams in their domestic leagues. Country economies are more at play when comparing those dominant teams against other dominant teams. Even within domestic leagues, city economies are a major factor. If parity were enforced within domestic leagues, then the PL would completely dominate in Europe due to their TV rights. If parity were enforced with Europe, then you would have clubs from lower income countries unable to meet financial demands when they have to spend more than they have while rich clubs just make more profit with lower salaries to pay.

The soccer isn’t as good in MLS as the European leagues, and the NWSL probably isn’t the best league in the world anymore, but I have a lot more fun following them because there is parity, which makes the competition more interesting every year.