As I have made no secret of my disdain for the one title EPL (with asterisk) winners who have spent fortunes buying success in the modern football era (post 1950s) then are the first to bleat about 'fairness' when others do it ... (which we did not, of course - our title winning squad costing roughly 50% of what Liverpool paid for their keeper)
... but I agree with you about clubs taking legal action - stated on here that I, personally, was against taking legal action against Everton when it was being mooted that us, Leeds and Southampton might do so ...