The biggest cost is labor, but labor money isn't something you need up front, since presumably at that point you have money coming in.
I realize everyone who's watched Breaking Bad thinks it's all about money laundering, but that's not as easy to do anymore, at least where I live, and the nail salons are proliferating.
Glasgow at one point had eight American Candy Stores that were always empty but been operational for years. Not even good American Candy.
When a lake spontaneously disappears you can see all the trash on the bottom because it's no longer obscured by the water.
When economic prosperity disappears you're left with baseline services that involve people and the government, because all the other activity that was obscuring it is gone.
I mean, Ghirardelli chocolate is nice, and I am fond of Junior Mints & Bit-O-Honey..but you can miss me with most Hershey and/or Mars products.