> they are completely unenforceable in California

California's non-compete laws don't cover "trade secrets", only your ability to use your expertise to pursue employment in your chosen field. In other words, if you're just a regular programmer, you can go work wherever you like or start a competing company. If you're a principal scientist or architect, you would be in danger of violating your contract. Anyone who went with Altman would presumably have deep inside knowledge of OpenAI's secret sauce and therefore be restricted.