Another problem in getting cities to cooperate against corporations seeking special deals, is that the "city" is actually "mayor or a few other bigshots", in that those are the people who would actually need to cooperate to get Congress or somebody else to stop this. But, this would deprive those same bigshots of the opportunity to sit in a room with the Amazon CEO (or whoever) and strike a deal. None of them want that. It's not the bigshots themselves who actually lose anything out of those deals, after all; their salaries and perks are untouched.