As a commercial software programmer I'd be happy if open source (with MIT/BSD etc non-GPL licensing) solved the issues that take me the longest time to solve. I

As a commercial software programmer I'd be happy if open source (with MIT/BSD etc non-GPL licensing) solved the issues that take me the longest time to solve. I could then apply even more levarage in providing more end user value. Professional software is not like beer or cars, it's about providing the end user tools which maximizes their professional output.