Why don't suburbs like Central and Walker ban high density developments?

I was in Central, near walmarks and the area looks a lot like North Baton Rouge now. It's obvious that high density developments don't stay nice for very long when they're in the suburbs and away from high paying job-centers. Yet, they keep allowing it to happen. It's baffling how people don't revolt.

Basically, there's crackheads walking around yelling at people, the stores there are increasingly run-down. The workforce increasingly ghetto and providing bad/messy service. These peoples' kids go to Central schools.

The simple solution to at least minimize this downward trend is to say that the minimum for ALL new developments is a 1/3 acre lot and 1800 square foot home, and put in requirements to mitigate any additional flooding they may have otherwise contributed to. Do this, with NO EXEMPTIONS.

Pro tip: The kids that do well in schools generally don't live in rural apartments.

Instead, we see new high density developments left and right. Do Republicans out here just hate having nice things? It seems we're going to have to move further out, unfortunately. These people in Central, Denham Springs, Walker, and Zachary don't see where this is going. Denham is kinda already there. Zachary has actually done a better job of zoning than the other communities listed, but it will still drop off a cliff in the next 10 years.