Yeah , it's the risk with their engine.
All they want first is money , it's normal , but
in second place i hope they will take care of community and bring
minimum things users ask :
i say minimum things that can be done for the engine and shaders :
if they are really 3D engine programmers it can't be incredibly difficult,
on the net you can find all shaders and engine things you need.

Well people will have to be carefull, not to buy an engine that is just developped without users in mind

For 3DSMAX it's not very good, caus it's a very expensive package to use for commercial things.
If you have a team that own it ok.if you are making a team that uses Blender or cheap ones like Silo and others that's is not really possible to ask each
to pay an incredible price and perhaps for a game that will not ne selled or be cancelled one day !

I work in industry in programming , i use open source and can say it has lot of benefits even if non free servers / tools are better in some points for support.

In 3D domain , there are free and cheap tools very great, for engine
targetting indie domain they must follow other general formats (3DS,Obj,Collad,FBx, Blender ... ) than 3DSMAX only !