Some of their friends, attribute PSG's wins in league to the wealth of the club owner. I agree, none of the other French clubs can access this amount of funds, and it has changed the game. But in European and world games, this is not the case, and teams with great wealth and stars face this team, who perform better in the management departments, both on the ground and at the top level of club management, and have more history and experience in these cups.
You are not far from the truth, the financial power of any football club determines how well the team will perform, because you need money to bring in the right coaching crew, the best players and also in terms of maintenance of club's facilities it is money that is used to facilitate all of these things and that's why no other club has been able to match PSG in terms of competition in French football for the last decade.
It would take more than good team to actually dethrone PSG, it would require a financially buoyant club with a steady source of income to compete against PSG, some decades ago during the era of Olympique Lyonais, it took PSG a great deal of financial investment from their Qatari owner to establish PSG not only as French giants but also as one of Europe's elite club so we can apparently attribute PSG's success to the lots of money at their disposal.