Open source doesn't represent socialism, which has a history of mass deaths and economic and literal starvation. Open source just says, "I wrote this code and you can use it without paying me."
To make an economy work, though, people have to pay for stuff -- which means they have to earn money. Open source projects, including all the big ones, are funded by profit-making, capitalist businesses. Whether it's being propped up by Adobe (like the awesome Blender) or Microsoft (with VS Code), you have to make money to be able to give it away like that. Even personal open source projects are funded by that person's money, probably from a job.