Personally, I have absolutely no concerns about the studio, the quality of the game, or even sales.
On PC, there are absolutely no equivalent simulators that offer varied content with production cars/****boxes.
Ten years later, Assetto Corsa 1 is still very popular with the community and is played a lot, much more than the majority of simulators with huge sales.
In fact, I think that the only enemy of Assetto Evo is certainly not XP or money management, which will be forgotten after a few years, but Assetto Corsa 1 itself, which is fully moddable, unlike EVO, which will be more limited.
However, the mods for Assetto 1 were necessary because the game was quite empty (no day/night cycle, no rain, and very little content), but it had a good foundation, whereas Evo will offer more content than the first game for a song (35 bucks is not expensive), but in the automotive world, we are never satisfied. there are so many interesting cars that games can't offer everything.
The only limit is the modders' imagination (or the theft of car models from other games), and if EVO will be very limited in terms of mods, I have my doubts about its longevity.