It is really sad to see them leave. They were one of the best open source citizens I know. We only have 1.0 today because of them (and many other contributors).
I was always sceptical about them having a valuable business model. And I thought they'd have bigger pockets. Becaue IMO FC/Ondsel is only now starting to get usable enough for anyone whose time is measured in $ per hour. Paying 1000 $ for a license is not much, if it saves your worker only 1 hour each week. Just yesterday I had troubles importing a step file into FC. Some worked two didn't. Ondsel could import them. That's when I read the sad news...
Sure there is this one guy who changes the oled to a different one bacause his screen broke and the old one has been difficult to source. Most people won't fix a 30$ iron. Especially since you need an iron to fix it...