Eh i know what you mean...but this isnt exclusive to black people...i know cats from other races who lack follow-thru as well. I nor anyone would be hard-pressed to give you a ratio or a percentage...we just notice it more cuz were black.
For me im procastinator, ill be honest...lack of focus and well defined goals, and finally what i would like to say is the time/money equation. When i have the time i dont have the money, when i have the money i dont have the time. But ultimately real hustle and real business acumen doesn't wait for any of these things...they just "do" and figure it out as they go along. Yeah its a gamble but not all of us can be successful in business...thats just the way the cards are dealt. Shouldnt stop you from trying...especially if your young and have no kids.