Let me preface this with I do NOT believe in segregation. What I am saying is prior to integration there were viable black communities, schools, businesses, churches, etc. that had leaders that were proud and were able to get the community to think and act independently for the betterment of themselves. The Federal Government destroyed that. Albeit for Integration...which is no doubt a good thing. I believe busing was the catalyst that started the tearing up of their community by splitting the children up from their own community. With the obvious lowering of education standards for everyone (because somehow the Government had a silly, stupid notion blacks were inferior intellectually..which was bullshit), the problems started.
I certainly don't have an answer, but what I do know it's not money and freaking Liberalism. You libs believe what the heck you want and can continue to deceive yourselves...along with the "Big Government" Republicans. If the black leaders like Jessie and friends truly wanted to help their people, they would have approached it differently after MLK was murdered. They sold themselves out. And here we are today.
There are still plenty of viable black communities just as you suggested all throughout the nation in all the ways you mentioned. There are plenty of movements within the black community whose quest is to reduce black on black crime, stop teen pregnancy and all of that. Yes, even after integration. Wow. Even tho it doesn't seem this way, The number of black folks doing well would surprise you.