The head of UEFA's financial fair play (FFP) unit has told Canal+ the system is working by reducing the spiralling debts of European clubs.
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Paris Saint-Germain and Manchester City were the most significant victims of the new regulations when the first set of sanctions under FFP were handed down late last season.
The pair were hit with hefty fines and head into this season's Champions League campaign with reduced-size squads, while seven other clubs were given lesser punishments for their infringements.
"When we put it in place, we looked at the cumulative losses of European clubs: 1.7 billion euros two years ago, 800 million euros now," Andrea Traverso, the head of UEFA's club licensing and financial fair play unit, said.
"It's an ensemble of quite complex rules drawn up between 2009 and 2010 aimed at improving the financial stability of clubs. It's a systematic, long-term approach. Michel Platini listened to the clubs, who were complaining about losing too much money.
"We have to put in place a system aiming to make European football viable. We like investors, we emphasis the ability to run a club. More investment equals more revenue tomorrow."
PSG president Nasser Al Khelaifi claimed earlier this week he would negotiate with UEFA to get the rules changed, arguing that they do not allow new investors to plough significant funds into a club, thereby maintaining the established elite.
Furthermore, French clubs, who have long had to adhere to a similar system headed by their own financial watchdog, the DNCG, also hope to get special dispensation from European football's governing body to even out -- what they believe to be -- an unfair financial playing field.
"We have not planned for an adjustment for France. The rules were made in 2010, a lot of things happened up until 2014. But we're going to listen, get feedback, and the system will progress. It's dynamic. It's not set in stone," Traverso explained.
"Everything PSG is doing is very good; it will bear fruit. The matter of fiscal differences across Europe will be discussed, but we'll also have to talk about sponsors, from betting companies to alcohol and tobacco, which aren't authorised in the same way from country to country."