I understand and agree with your particular assertions about copyleft and unix pipes, etc. but disagree that it's a "bugbear".
I know from experience some organizations are perfectly willing to contribute changes back upstream on MIT/BSD-licensed components, but avoid GPL components simply because of the additional constraints and potential liability concerns that have to be dealt with. Apple is a perfect example given the additional conditions of the GPLv3.
I know from experience some organizations are perfectly willing to contribute changes back upstream on MIT/BSD-licensed components, but avoid GPL components simply because of the additional constraints and potential liability concerns that have to be dealt with. Apple is a perfect example given the additional conditions of the GPLv3.