Well my friend i have played A LOT of clicker/idle games on itch and on steam, and i can tell you this one is way more towards the (full clicker game id pay money for) than just a proof of concept!!
You have multiple upgrades, you have sound, you have back ground music, you have coin animations, and you have the cutest little anime chibi grub (that evolves no less) to click on. This could totally go on steam right now for at least 5-10 bucks without making any changes!!!
I would however like to request 2 things if you do decide to port and start selling (1. some kind of prestige or rebirth system, and 2. an auto collection for audience coins upgrade)
I have yet to beat it, but im getting there...thanks for the fun cute game!! And please ask you friend if he would make a seccond game with you or just expand this one and port it to steam, you cant let GEMS like this just die!!