To an extent this is true. However, as soon as that area becomes successful the leaches move in too. You can't have a buisness that only hires white people. You can't have your own schools. You can't have your own neighborhood. That means that everything is temporary. You can't expect the town you build to be there for your kids or grandkids.

There are well funded organization that target white majority areas for "integration". If you look at demographics maps you can clearly see that there is no refuge.