If you ban all other forms of advertising, you will get fake "friends" trying to sell you stuff. I suppose "influencers" and MLMs are existing versions of this,

If you ban all other forms of advertising, you will get fake "friends" trying to sell you stuff. I suppose "influencers" and MLMs are existing versions of this, but they are rightly seen as tacky and parasocial. Do you really want to force all advertising down that route?