Interesting discussion. My feeling is PF2 will take longer to adopt than PF1. PF1 had the advantage of using a very popular rule system that D&D was moving on from completely for a version of D&D that was a major move away from what the player base was accustomed to. The splintered community gave them a nice boost.
PF2 is entering a very different market with a very different product. It might take some time for people to realize how good the system is. It's a good system. When I read the player test, my gaming group and I thought it looked kind of lame. Lots of small bonuses, weaker casting, and changes to nearly everything. It seem far less powerful. Then when we played it, we found that it played better than it looked. It was a very smooth, interesting, fun play experience.
I hope PF2 succeeds once word of mouth spreads and more people give it a try. It has a lot of interesting mechanics that are fun for a DM and players.