Agreed with this. The startup isn't worth digging your heels into if he's critical for the business. He will understand if you have significant revenue and empl

Agreed with this. The startup isn't worth digging your heels into if he's critical for the business. He will understand if you have significant revenue and employees to take care of. If you don't and you're pre-PMF though, I'd just shut down or pivot to something else if it doesn't make sense anymore. (I ran a YC startup and my cofounder split. I stuck with it for too long, and I got depressed working on the old thing alone when it still wasn't getting anywhere.)