Wasn't that always the case with Eucon or did Euphonix allow other manufacturers to build competing control surfaces with their protocol as the basis?
No offense to anyone but people seem to see Avid conspiracies under every rock.
The fact of the matter is that they are largely a hardware company who now owns Euphonix. It wouldn't make much sense (imo, mmv) for them to allow competitors to build hardware control surfaces using Eucon that would directly compete with their own products. Unless those other products also meant more sales of their software, like their video software.
It's their intellectual property now, and they paid a pretty penny for it. From a business perspective, the idea that they should just allow anyone (Yamaha?) to build a Eucon capable control surface is (imo) maybe a little nuts... unless they charged a really, really hefty licensing fee.