Linux mce can' t open doors or lock door as far as I know, it also can' t recognize people/number plates and also no speech control e.t.c.
That only shows how much you know. And as far as recognizing speech, people and number plates go, that should all be possible as well with some extra development.
Personally I couldn't care less about those features as they will never work flawlessly anyway, but if you think they are so important then why don't you just buy one of their systems? And what e.t.c. b.t.w?