as far as I can make out there are two big driving forces behind this relaxation of the rules. The first is that the two milan clubs have gone straight down the toilet as a result of FFP. Silvio and Moratti were massively in favour of FFP, because they wanted to stop pumping €100 million a year into their clubs. Unfortunately their clubs are so badly run that their efforts to cut back to a level of spending that was close to their income has seen them crash into midtable, losing CL revenue, and running up huge losses anyway. Both want to sell their clubs, but no-one wants to buy a midtable club that is running up huge losses. These clubs have no idea how to operate within their budget, and instead of adjusting, and coming back stronger, they are desperate to have the rules changed so they can go back to buying a champions league place, and screw over napoli, roma, lazio and fiorentina. If you were to say to an italian that FFP is about entrenching a wealthy elite, they would laugh at you. Italy above all is the league that was most distorted, and damaged by Sugar Daddy spending. Then you have PSG. More on that later.
The second big driver is something wenger mentioned at his press conference. It is the Premier league TV deals. The next PL deal is going to move every premier league club from being in the top 40 richest clubs in europe, into the top 30. That is a massive change, that will gradually start to have increasingly large effects. The bottom club in the premier league is going to be making nearly as much from domestic television as Real Madrid and Barcelona. This means that rich buyers are going to be drawn more to the PL than to big clubs in other leagues.
This second issue is very important, because while other people within UEFA are thinking about the long term viability and financial stability of european football, platini seems to have been trying to rein in the english clubs. (These proposals came into existence when english clubs were getting 3 CL semi final spots) Every time he has been talking about FFP he seems to mention english clubs there for some reason. He mentions how the French media are unhappy that PSG can't buy whoever they want, but Roman Abramovich can. However Roman Abramovich isn't putting any more money into chelsea, and hasn't done so in a while. Why is he talking about Roman Abramovich? The only reason that Chelsea were able to afford to buy fabregas, Costa and fillipe Luis last season was because PSG paid the guts of £50 million for David Luiz.
If Platini was behind FFP for the right reasons, then he would have been saying different things, and focusing more on the Milan Clubs. However, given how France has become increasingly cosy with Qatar, (Something that extends far beyond PSG) and given that his son works for PSG, I must say that I don't trust him at all.
Also I don't understand the argument that FFP is cementing in place a hierarchy of rich clubs. That is an entirely separate problem. Inequality of income is a major problem for leagues all across europe. In the past this could be ignored by someone coming in and artificially creating a super club, and creating an illusion of competition, while crushing every other club, and destroying the opportunities for clubs that didn't have a sugar daddy. But with the implementation of FFP in Spain, you are seeing real pressure to divide the TV deal in a better, if still unfair way. The same pressures are rising in Italy.