I would say I expected the PSG game to end in a draw or even lead to extra time because of how much pressure Monaco put on PSG. The last time these two met, Monaco has to lose in the penalty shootout and so for it to have extended to the 90+ before PSG could get a goal only shows how much Monaco worried them.
This result is a bit painful because Monaco should have been the one to carry the trophy but since they couldn't drive home their chances well enough, I think PSG had to show them how it was done.