Good point. Most Black high net worth individuals likely do not live within economically disconnected communities ... 
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My bro-in-law who manages money for high net worth individuals investing in bonds says investment in VC/Private Equity will be up. I agree.
what are high net worth individuals, their importance in investment business, ways to retention and acquiring?
-need and criteria of segmentation of investors in stock market,
-what are investor segments like retailers, corporates, and high net worth individuals?
-how we study investment habits of investors?
-how we can acquire new and retain
You need to narrow and focus your question. As I read what you wrote, I am not sure what you are looking for. Perhaps it is your use of the language.
If you are looking for HNW individuals to offer investments to, then you can search
Most of the high net worth individuals that I meet on a daily basis are business owners and top-level executives working for multinational companies. In Singapore, the executives tend to be mostly professionals from within service industries such as banking, finance and insurance, as well as those involved in luxury products, property developers and landlords. Such wealthy individuals often have second homes or do business in Singapore and therefore tend to keep their money in property or with private banks. The latter they use as a place to park funds and for wealth conservation while looking for bigger profits outside the financial institutions. There are also many foreign property investors in Singapore from places like Indonesia and Russia who have interests in infrastructure and commodities back home, such as mining, diamonds and jewellery, water, timber and gas. These people tend to be between 40 and 60 years old, although some of the younger HNWI are still in their 30s, and usually second generation.