You're replying to a story about a guy who wants to replace tower cranes because two of them fell over and killed people in the same year.
That's why the city cares. Every time one goes up or comes down there's a risk involved.
Are you familiar with the concept of opportunity cost? Effort spend redoing things all the time instead of improving and building new things is not making a city better.
If a city had the narrow concerns of a business then that might make sense.