It doesn't have to be food trucks exactly, that's just an industry that people like in a business that's relatively simple and imo has low systemic risk.
Those that don't will expect a steep discount.
Meanwhile those people who take the risk and it doesn't work out will still have bills and rent to pay.
How do you prevent over-crowding of a location, and flow-on effect of crowds from said truck?
How do you make sure the waste products are sanely disposed?
And a million other concerns from third parties unrelated to the business, but is affected by its existence?
I'm definitely open to discussions about how to help people incapable of raising a couple hundred bucks and lacking the skills to cook a hot dog. I'm not claiming to attempt to solve every problem.