in fact PSG had to face a bad period without their flagship player and indeed had to find ways to improve PSG performance without the presence of Mbappe and Messi. Neymr was physical disturbed because of the injury him had experienced, which influence Neymr performance to look good next season.
are you sure you have any thought on wishing Kane would join PSG? I do not think so. maybe you say a much better team because PSG finance are very good but its not about money but about the career and loyalty of Harry Kane who is comfortable in his current team.
the transfer window is near closing and if there is no PSG interest in replace Messi and Mbappe it will be a rough summer for Enrique.
I still think that they are going to be the best team in all of France when Mbappe leaves. They are a rich club and it would not be a problem for them to make more money neither, they are very rich so it is not really an issue for them and they will do fine.
I hope that they do not really do anything crazy, because that would not be nice for their end game, but if they end up realizing that this Mbappe deal was a wrong one, at least they learned something from that and could end up doing better. I have to say it is very terrible for them to just put the trust of the whole club into a single player, and when this type of thing happens, they are left without that. So, next time they will do a lot better in the future when rebuilding.
PSG put a lot of trust in Mbappe and as a result, PSG always gave Mbappe maximum power and opportunities without giving the other players in the team as much priority. PSG may have forgotten that to improve the performance of the team, it is not only dependent on one player, but the rest of the players must be equally dependent because if each player does not perform well in his own position, then the team will never achieve anything good. If Mbappe leaves the club, PSG will certainly have the ability to replace him, but PSG never wanted Mbappe out of the team. As a result, the highest power was given to Mbappe but still Mbappe is no longer at PSG. If Mbappe is not in PSG now, there is no point in keeping him in the team.