Thanks misstify!
I plan on updating the game though with all these suggestions in mind.
And yes, the late-game can be a bit underwhelming and get a bit boring (and the ending is rage-inducing if you lose)! I'll also probably add some statistics page in-game so the player can track if he/she is winning and add some more unlockable items/customers to help make the mid-late game interesting or even add some replayability value.
I'm glad you enjoyed it!