What would normally be on a TGIF on ABC, or the CW (WB with Michael J Frog[?]), or UPN has mostly ended up on BET, Centric, or OWN.
I'd like to think that there's no point in trying to compete with the prime networks when you can go to the networks that focus on black viewership.
Ideas are probably not being greenlit at the 90s rate. After the success of The Cosby Show, not discounting others before like Good Times, networks might have saw it as a cash cow and you just got a whole golden era of black comedy in the 90s. After which it pretty much dwindled after UPN/WB/CW stopped showing interest.
I think the last ones that were remotely popular was The Game and My Wife and Kids.
But now there's been sort of a resurgence on the prime networks. The fact that The Carmichael Show got renewed for a second season speaks volumes. I think it's a good show. It has that All In The Family feel.
In fact, it's the black version of All in the Family. Also with Blackish, people assumed it was gonna be a problematic show, it's been getting great ratings. It's a staple on primetime tv.