It's all motivated by greed and nothing more. Let them go, don't let them go, it won't sort the problem.
Stop letting 'investors' own football clubs. They expect a return yet only a very small percentage of clubs are in a position to achieve that.
Phase in a reasonable and annually reviewed wage cap in line with inflation and living costs. Perhaps limit clubs to 3 uncapped signings.
Get rid of independent agents or at least cap the percentage/total they can make on any one deal.
I've no idea if any of that is truely viable but they need to stop the utter gravy train that pe