That’s what ruined Cryitek:
business strategy by subscription,
bad work with the community (and there were wonderful people !!!), weak and superficial feedback, enthusiasm for various trinkets (the so-called killer-features), while not very clean code (compare the analysis made by PVS-Studio, for example).
And for Linux is there any source code to build? Again only Windows, is not it?
Crytek need to mobilize and work very well and hard, if at all, they want the engine, and at the moment they can compete only with UE3 (T-H-R-E-E !!!) (or 3.5 ). At YTube exist comparision CE vs UE3.