I'd wager that there are a lot of in-house re-implementations of GPL software because the license isn't permissive enough. I think the fact that good non-GPL al

I'd wager that there are a lot of in-house re-implementations of GPL software because the license isn't permissive enough. I think the fact that good non-GPL alternatives exist supports my hypothesis; given the choice between GPL and reinvent the wheel, it's feasible for someone to take the latter path.