So yes, if you make the hypothesis that things went out so we would all be using BSD, then we would. And yes, successful projects and people always come from a part of luck. But so what? What happened in reality is what happened, and if they went lucky good for them, but this does not really removes anything from their achievements.
If your achievements came about by luck then how do you get off claiming credit for their success? I don’t think git was purely luck—it is a formidable tool in its own right, but there are better tools out there, and that was especially true at the time when git really took off, which is to say when GitHub began to be popular.
So yes, if you make the hypothesis that things went out so we would all be using BSD, then we would. And yes, successful projects and people always come from a part of luck. But so what? What happened in reality is what happened, and if they went lucky good for them, but this does not really removes anything from their achievements.