The person behind all of this just wants to see general demand for firefall 2.0 aka ember for now, I dont think people that are willing to form a ember producing company are in higher count like 5 (maybe more, who knows if people from r5 are willing to do it all over again). If you want a healthy game developing studio you should have around 300 employees, depending on scope of the project of course.
Also if they got PC Gamer and even someone like Force (
https://www.youtube.com/channel/UCGhs9S33RAeT5DEuKTO4Oew) who as far as I know was producing handful of firefall content back in the day, I am sure that would help reaching to the loyal fans of firefall, because I can imagine most of the people dont yet know about this and the fact that r5 pretty much doesnt exist anymore. Hell, if I didnt have forum pm email notifications on and someone from the ember team/a bot didnt send me a pm notifying me about ember, I wouldnt know about it either and would be waiting for some next annoucment on steam/forums/site.