The deal with African-American and other minority comic book companies, writers and artists

How come most African-American and/or minority-owned comic book companies don't seem to get to get as much press, exposure or notoriety as other comic book publishers?

Milestone Comics was a notable exception:

http://en.wikipedia.org/wiki/Milestone_Comics



[img}http://2.bp.blogspot.com/_-fjqQockj3s/S_ytky8IgDI/AAAAAAAAAeE/zp-vdCsjqAU/s1600/Milestone.jpg{/img]

DC published Milestone Comics and eventually bought the rights to the Milestone characters.

Static was the star of his own animated series and appeared in Justice League Unlimited.

Dwayne McDuffie was a notable writer who worked for Milestone Comics:
http://en.wikipedia.org/wiki/Dwayne_McDuffie



How come you don't really hear about OTHER African-American comic book publishers or African-American comic book writers, or OTHER minority owned comic book publishers or writers or artists?

Is it because most of the companies and artists and writers are only trying to cater to the minority market? Why is it most don't branch out and go mainstream like the major comic book publishers, like DC and Marvel? I am curious- please help.