> So the first mover, the program author, is always at a strategic disadvantage.

I disagree with that part. You have the people who know and understand the code, that's worth a tremendous amount. This also applies for new features, who else is gonna be as proficient as your people at building on top of it? Also a lot of enterprise contracts are all about assured support, who is placed better than you to provide it? You have the people that have the best understanding of the code.