Yeah I cant say I agree with Mr Kay my answer to his quote will be that he is wrong and that "the best way to predict the future is to create a monopoly" . After all Windows had and still has a very predictable future. But I can understand why he said that, and I most certainly would motivate this kind of thinking which I find it as the foundation of Smalltalk culture and why I love to use Smalltalk. �
Its kinda ironic that bigger (market share wise) something is the less mobile it becomes.�
To the rest of your reply, I cant really argue so deeply. Personally I am just a dude that does very basic things with git. As to why sourceforge lost some of its crowd to Github, for me its dead obvious that Github is a much more clean and well designed solution. I always saw sourceforge as too messy, and If sourceforge was our only alternative option then I would be pushing for improvement to Smalltalkhub.�
Unfortunately I am not interested into source control. I am mainly a GUI , graphics and sound / music coder. Maybe one day like you , after I have used it for much more projects, I will hate git, but so far it has worked great for my very simple needs. �