Nothing to do with Leeds, FFP wasn't brought in by the English, it was European. Real, Barca, the big Italian clubs and the traditional big English clubs were all being outbid by Chelsea and they didn't want any more Chelseas, so they brought in rules to try and stop that happening. The 'help poorer clubs' stuff was pure spin to deceive the naive. The likes of Real didn't give a toss about Leeds, they just wanted to win competitions, as we did too.
The rise of Blackburn wasn't forgotten by those English clubs incidentally, they didn't want any more of those either.