>>I come back to the point that if division is intrinsically good, why not >>fork Inkscape, Audacity, Gimp, etc etc.
GIMP has been forked for quite some time... Read up on the history of CinePaint (formerly known as "Film GIMP") and its disagreements with GIMP. Here the reasons for the fork were mostly technical disagreements, but sure, these were about policy issues like in what way the project should evolve, "quick and dirty" (then surprisingly followed by "let's change the toolkit used") or "slowly but steadily towards perfection". Or something like that, but I am not neutral and should probably not say more... (I am in the GIMP camp). --tml