They transferred important players and paid high transfer fees. The only reward for the money they pay is the expectation of success. If PSG can achieve success, Enrique can stay at the head of the team for a long time. In my opinion, Enrique should be able to make it to at least the quarter-finals of the Champions League.
Unlike you, I'm not sure at all about Enrique being successful in PSG. In fact, PSG had many superstar players in the last season they could help the team like Messi but they didn't have a good coach like Enrique in his team, Now when some players left PSG for the other teams, Enrique started working there but still I don't think if Enrique is enough to help PSG improve the team.
I think PSG still can't earn achievements in the Champions League.
Enrique wasn't all that great before neither, I keep saying that the only problem PSG has is not getting the best managers they could, they should try to do that and could do that but they keep not doing it. I mean getting pcoıhettino, and then getting some unknown Galtier guy, and then Enrique.
These are not the stuff they should be doing. Pay Zidane 10-20-30 million if you have to and get him, nobody would ever be able to say no to a contract that says 25 million for example and that would be the best way to go for them, and yet they still do not do it. I think it should be important to note that there are other great managers too, but Zidane is the only free agent one and it's all about money, give him enough and he would say yes.
I think the most important reason for Enrique to start working in PSG was the good performance he had before when he was working at Barcelona because other than that he couldn't have good performance during all these years. PSG wanted to hire Zidane and Enrique but in the end, they sent an offer for Enrique and we can't still be sure and say if Enrique was successful in PSG or not because he fully rebuilt the team and this will take some more time for them to get in the good form and take back the ist place of the French League.