0% equity as 80% salary is good enough considering for summer jobs other places may pay 100%~120% salary (assuming market rates do not fluctuate) but many will

0% equity as 80% salary is good enough considering for summer jobs other places may pay 100%~120% salary (assuming market rates do not fluctuate) but many will also pay ~<80% as it is established that interns will also gain experience, CV value, and some mentoring too.