Sweden tried to become more socialist in 1970s-80s, and it did not look pretty. (Then Mr. Palme was shot and killed.)

Venezuela... well, does not look like an enticing example either.

I would say that socialism as a state-imposed regime does not work, same as communism. BTW communism does work in communes of like-minded individuals, be it a bunch of hippies or a bunch of monks. The key is self-selecting people who subscribe to that way of living voluntarily. This can't work for a whole country.

OTOH what the TFA suggests does work, exactly because mission-driven open-source projects / foundations and non-profits attract the right kind of motivated people, while providing little to no incentive for entities seeking pure profit to take over. Debian is one example: it exists for decades in the normal capitalist economy, is going strong, and shows no signs (and no ways) of selling out.

This, to my mind, is the future. Maybe 50 years from now our grandchildren will be appalled by the fact that we kept giving our free labor and free time to for-profit entities which did not have our best interests aligned with theirs.