I guess Google don't want this. In the last years Google has been hiding ads making them looking like the normal results [1]. From an advertiser perspective, you want to have your ad as the best result for a search, "lying" to users to use your website or product because is the best for what you're looking for.

I think this is different with Youtube. I see those ads like TV ones. Everyone know it's an ad, so the advertiser has to use their ability to catch the costumer.

[1] - https://www.theverge.com/tldr/2020/1/23/21078343/google-ad-d...