The end of GitHub as we know it is near?

Why do open source collaboration? Why not a single product developer getting crowd paid to add features, solve bugs, using AI. So many businesses will see their moat wiped out.

On the macro level capitalism is winner-takes-all and Musk is the only one seriously playing the game. End game: own everything, including payments, and governments come begging and will protect him from citizen revolt. Supervillain/overlord territory.