Help me understand why there's a 100k plus neighborhood in a war zone

[Omar Gutierrez]

So I drove through an area called oak cliff (complete war zone in dallas) and I came across a small neighborhood called encino hills. This area has 100k houses but what surrounds it is a complete run down of houses and commercial properties. Now my question to you is did this builder make a huge mistake? I've also seen on the outskirts of oak cliff is another section of spec builds. I can't seem to understand why these guys are building houses in a warzone. If someone local here in the dallas area please explain what the heck is going on?!?!