This might be true in some application areas, but certainly not generally. Where is that commercial kernel that works over a wide spectrum of architectures and

This might be true in some application areas, but certainly not generally. Where is that commercial kernel that works over a wide spectrum of architectures and system sizes? Where is that commercial compiler that works on many architectures? Where is that commercial packet capture software that people a paying for to get work done? Where is that commercial emulator that can run your operating system on a very different machine in countless combinations. The list could go on and on...