I'd imagine it's because nobody will want to use the 32-bit version for anything commercial, so there's no worry about it. If some company wants to use the 64-b

I'd imagine it's because nobody will want to use the 32-bit version for anything commercial, so there's no worry about it. If some company wants to use the 64-bit version commercially, then the team is going to want to have some say there in case the project picks up steam and really goes somewhere.