You just switched the subject of the conversation from "luxury condos for wealthy people" to "infrastructure". That's a tricky debate tactic. Of course you have to "grow infrastructure," nobody is arguing that in the abstract, but there's a lot of choices to make about what and how. Luxury condos are one type of thing that can be built, middle-income housing is another. They have different effects on the city. The current incentives that lead developers to building only luxury condos are not a law of nature or economics, they're a result of political choices by the city and state, and they can be changed.