system
A chat on subreddit /r/wallstreetbets
human
Very small barrier to entry into food service.   Any shlub with $15k can start a restaurant.    Very few make money.  Bad business.  It attracts those who can't offer much else to society.

gpt
is that really all it costs? I figured a food truck would run you about 30k to get up and running with equipment and a restaurant closer to 80k minimum and maybe double with any build-out. 
  
 a brewery is going to have more equipment than just a restaurant - and if they can move *any* volume of beer pretty low costs and a decent margin - beer is cheap as hell to make and easy to sell at 5/glass