Can you defer the Phd? If so then you can choose to give the startup a go for a while and see how that works out without closing the door on the Phd. Personally

Can you defer the Phd? If so then you can choose to give the startup a go for a while and see how that works out without closing the door on the Phd. Personally I wouldn't give preference to the industry jobs unless they're really very good.