Why are high rises so much more profitable to the city? Is it just that a larger part of the infrastructure (stairwells, elevators, power distribution, water s

Why are high rises so much more profitable to the city? Is it just that a larger part of the infrastructure (stairwells, elevators, power distribution, water supply, sewage, and related) are privatized and managed by someone with an eye on the bottom line? Cities seem extremely poor paying for infrastructure based on performance. Water supplies should be paid for uptime, percent of the population they deliver water to, and quality of the water. Road companies should be paid by lanes * miles * years they last (according to some quality metric for common road failure methods). Bridges similar. If someone builds a building for the city they should be paid by the usable square foot and an incentive for delivery time.