I just remembered a pretty good example of this with the story of BitKeeper and Git, you can read http://kerneltrap.org/node/4966 http://kerneltrap.org/node/496

I just remembered a pretty good example of this with the story of BitKeeper and Git, you can read http://kerneltrap.org/node/4966 http://kerneltrap.org/node/4966 for more information. It was the catalyst of losing the cheap enough/free option that motivated the work on Git.