I suspect it’s more like, 99% of the population is indifferent, a small number of people care a lot (in this case, it’s probably restaurant owners), and elected officials do what the small number wants because they’re the only ones voicing any sort of opinion. (And they probably donate to campaigns.)
This is a well-known phenomenon in political science---Mancur Olson, "The Logic of Collective Action," is the relevant read: small groups that can generate group-specific benefits (like suppressing competition for their businesses) have a much easier time carrying out organized political activity of all kinds rather than large diffuse groups trying to create public benefits (like food truck availability)
