Yep. And your "reuse-in-the-large" I'd argue is also a side effect of reality itself. Take any market sector or industry, not just software - I suspect the "eas

Yep. And your "reuse-in-the-large" I'd argue is also a side effect of reality itself. Take any market sector or industry, not just software - I suspect the "easyness" of directly reusing and copying any complex system is vanishingly small. If that were not the case, we would have infinite choices and brands of any complex product ever made!