When My Little Pony had a black girl in their ad in the 80s my mom broke her rule about "plastic junk toys" and let me get it. It was THAT big of a deal. I'm certain they noticed the way such ads could drive sales in new markets.
They didn't understand what was making it work. It used to be that I could be happy that a black model got a job from such ads, but now they are probably all just generated so it just feels like being stalked by a creep who won't stop asking you out.