Like the idea, and the little dough blob, the visuals are very appropriate too. I did feel the progression, especially in the beginning was on the slow side (which meant I got annoyed at the music loop!)
Would be great to see a version where there's a little more animation from the different factory elements, a bit of extra visual interest. And to avoid the music getting too repetitive you could build it up over time at each upgrade add another 'instrument' or tune?
Anyway, cute little game, sadly it crashed before I could get all the upgrades