Yeah but those are all driven by competition, which is something that capitalism promotes. Is there something that promotes competition but also collaboration?
I think another sibling comment is right, there needs to be a mix of both and is all down to trade offs.
Socialism says nothing about competition in the realm politics/power. Elites don't go after the money for the money, they go after the money as a means to power. You can add all the socialistic elements to society you want, as long as there are limited positions of meaningful power, you will likely get people competing over them.
And at some point you've added as much socialism as you can, and now you're at communism. And now you have "from each according to his abilities, to each according to his needs", and now you have people squabbling over who the hell is best at high-influence, high-prestige positions, cause they're all pretty sure that they are the best.
And remember, capitalism -does- promote collaboration. A corporation is nothing but a huge collaboration. A collaboration that looks actually hilariously socialistic/communistic.
I think another sibling comment is right, there needs to be a mix of both and is all down to trade offs.