I mean, they did.
Easy to forget that they also made the Champions League final in 2020. It's not as if this PSG made the CL final and the Neymar and Mbappe side didn't. The difference is that PSG came up against a great Bayern side that had Lewa, Muller, Thiago, Davies, Kimmich, etc, and PSG today came up against Inter Milan with, well, Acerbi, Mhki, and a slew of other bang average overachievers.
That's not to take away from today. It was one of the most exceptional final performances in CL history, but we also can't revise history. That PSG team of individuals did get this far; they just lost to a far more superior team than PSG played today.