I dont know about the market but i am an old gamer and i can say this .IMHO PF2 is the best fantasy TTRPG that i ever GM . I current having the best experiance of my life as a GM with SoT AP using foundry. It is like a dream . Crunch , Balance , Lore, RP and the PF2 system of foundry. Sorry for my bad english.
I agree, there are many people not actively posting here that enjoy the game. It just works well. There is no need to discuss rules issues and such because almost everything has been laid out clearly in their books if you take the time to research it (which often only takes a few minutes thanks to Archives of Nethys).
Also the Foundry VTT support for it is so good that even if you haven't read the rules it will be easy to learn them during play because all the references are simply one click away.
Imo PF2 with a good Virtual Tabletop is the best experience I ever had playing TTRPGs yet (as a DM and player). I played 5e, Pathfinder 1, DCC, B/X, FATE, SWADE, 5 Torches Deep, BitD and the Cypher System.
If you'd ask me, I'd say PF2e is an RPG that actually benefits quite a lot from a Virtual Tabletop environment and offers you everything that other RPGs try to give you but better, if used in that environment. Intended or not, it seems to be built in such a "programatic" way that it just fits with the tools a VTT offers.
Therefore PF2e takes all the cool things from Old School RPGs and advances it to New School. That's cool.