Maybe it is because most white people are no longer watching the trash on TV, so there is no use in having advertisements for white people. The advertisers aim their commercials at those watching.
If you mean that advertisers are only trying to please their audience, I don't think so. Ads these days lecture to their audience. The Gillette ad is an especially grievous example, but there are many.
The people behind the ads -- the companies and Madison Avenue -- hate their customers. They're more interested in expressing their wokeness than in making money.