Fun and emergent gameplay, a good starting prototype but a few things to think about would be integrating a leaderboard to give players a reason to stick around and also making the theme clear. The button moving after a few minutes feels more like a normal gameplay challenge than an error, so it's not certain if this is even theme related or just an increase in difficulty meant to have you focus on purchasing upgrades instead of just clicking without much engagement.
There is a whole lot of juice here which is awesome, I think you should seriously take this game and launch it somewhere professionally, but also think about how to lean into the 'its just a button' premise.