This is a perfectly valid question to ask, but I suspect what lurks beneath the question is the assumption that advancing one’s career = getting a promotion. I contest this quite heavily. In my opinion, it’s like equating being a good friend with getting invited to friend’s wedding.
A failed first mile cripples a new product right out of the gate. Your product may get lots of downloads or sign-ups, but very few customers get on-boarded and primed to the point where they know three things: (1) why they’re there, (2) what they can accomplish, (3) and what to do next (note: users don’t need to know how to use your product at the beginning, they just need to know what to do next!). Once a new user knows these three things, they have reached “The Zone.” Fantastic businesses are built when the majority of users that express interest in a product are able to get on-boarded and into The Zone.