They're interested in compilers because, unfortunately, GCC has never really had any emphasis on Objective-C support. What would be their motivation for restri

They're interested in compilers because, unfortunately, GCC has never really had any emphasis on Objective-C support. What would be their motivation for restricting down to a single compiler? They had a (silly) reason to lock people into Objective-C; but that reason doesn't apply here. And even if they did, how would that be different from now where GCC is the only option?