every IT and dev gig I've been at / around basically said "anything you create is ours and we have ROFR on any LLCs or companies you found"

in practice that is either unenforceable or else a giant waste of the company's money, but it's CYA in case someone doing engineering or creative work decides to rip it off elsewhere.

like Meta ain't gonna try to steal your local cupcakes at the farmer's market side gig