Elon is not going to be happy about this. He's been vocal about his dislike towards the business model OpenAI chose to run with.
Cursor is purportedly a huge customer of OAI, maybe a top five? I think Elon bought it to have leverage on sama.
If timed correctly, Elon could pull the plug on a huge customer (Cursor) the quarter before OAI try to IPO.
Elon is 100% a for profit person, it's just a 10 year rivalry between Sam and Elon.