Dictators with mega bank own the sporting world these days not just Speedway. Starting to see it in Football, Golf etc.
As far as Speedway goes riders would take on more leagues to earn the best living possible no doubt about it but the PZM won't let them though as they basically run a dictatorship where it's a case of sign for a Polish club but we also dictate what you can and cant do in your career in return which is wrong.
It really shouldn't matter if a rider decides to ride in 1, 2, 3 or 4 leagues. They should be allowed to take on how much work they think their own body and mind can handle.