I have been living in NYC for ten years. I use cabs constantly. This has happened to be exactly one time. I'm not saying it doesn't happen, but I think the idea that this is common for NYC cabbies to do is really outdated.
More anecdata: this happens to me continually. I have successfully reported at least half a dozen drivers in as many months for refusing to go to bushwick.
fellow bushwick resident here, I can confirm no yellow cabs want to go to brooklyn. many cabs also will lock their doors to prevent you from getting in, until after you've told them your destination.
Maybe the "market" is telling you not to live in bushwick ?