There's a saying "open source is for losers". What it means is that winners in a market don't want open source. The losers in a market push for it to commodify it eliminate the winner's advantage.

Now some of these tech companies open source various libraries but none of it is core to their business. It's marketing, essentially. Or they're trying to get free labor from the community. Google had protocol buffers and Stubby, for example. Facebook had no open source equivalent and didn't have Google's resources so they created Thrift and open sourced it.

Given this, many people, myself included, take Meta releasing open weight models as conceding defeat. They're unable to compete with Google, Anthropic or OpenAI. Their failures in attracting and retaining top AI talent backs this up.

So what you're seeing is people just piling onto Zuckerberg because he seems to have no idea of what to do with Meta. The Metaverse was a $70B+ disaster.

Note that Chinese labs don't fit this model because the Chinese government wants to commodify models as a national security interest.