I've came across a job post for a software engineer position at a recent startup. The responsibility included pretty much everything that involves programming. I would be an employee, and will not have ownership. The job would be really rewarding and would be a great experience for me.
Now if I worked for this start up and somehow an academic position came along, I would probably take it because I personally am more interested in that. (The reason I'm not applying for academic positions from the beginning because there aren't any right now.)
This is normal at large corporates. People leave 6 months after getting hired because they find jobs that suit them better.
However, is this understandable for start up owners? I don't want to apply for the job if it would hurt both sides.