Newsflash to the uninformed. The native people of Brooklyn don't care what you think. The shopper keepers in the Fulton Malls have thriving businesses serving(primarily minority) people from ALL over Brooklyn.
The Fulton Mall area is equivalent to 34th street in Manhattan, or Jamaica Ave in Queens in that it's a shopping dirtict: MOST OF THE PEOPLE WHO SHOP THERE-DON'T LIVE THERE.
Downtown Brooklyn is vibrant, especially Fort Greene. There are good shops(more still needed), and GREAT restaurants.
The lack of amenities that suit you seems like an real oppurtunity to me. Put your money where your mouth is, and encourage some "real" retail developement for you and your neighbors.