YouTube channel AJ+ made a video a couple days ago discussing the emergence and fall of the golden age of black sitcoms in the 1990s. Presented by Imaeyen Ibanga, the video goes over how The Cosby sparked the creation of black sitcoms in the 90s to their peak in popularity to the decline caused by the emergence of gentrification and reality shows.
She also discusses how this period created a distinct difference in viewership in black and white households for the first time ever. We see how probable the resurgence of the representation from the 90s is with modern examples like Atlanta, Blackish, and Dear White People.
Here is a quote from author Kristal Zook about why some of the 90s black sitcoms were cancelled early in their lifespan.
Here's the link for the video again. https://www.youtube.com/watch?v=CEiXGrqoFMs
Fox Network that aired the majority of the black shows cancelled them because Fox was then in a position to court white audiences.