That's an interesting idea. Much like how China develops cities first, then moves people into them later, you seem to be suggesting individuals could build cheap houses on cheap land to incentivize infrastructure building toward and outward from new construction.

I don't think the economics work out here for the "less fortunate" because there is a certain minimum threshold of time-plus-money necessary to start this process, and I think without detailed planning provisions it will end up as worse-than-useless sprawl, but it's something to build on, if you'll excuse the pun.