I don't want people pushing things at me that I'm 100% uninterested in in the off chance that 1% of those ads is actually interesting to me and I otherwise wouldn't know it exists. I do want to be able to search a database of vendors (with degrees of trust associated with them) with objective descriptions of available goods and services at known costs, either one-time or recurring. If I'm looking for something that's completely new, I should still be able to find it by using relevant terms and weightings (cost, materials, origin of materials, shipping distance, labor chain, etc.)
So, no, I do think someone using their front yard to sell a couch is bad provided we have the internet and a good marketplace built on top of it. Who wants to see human junk covering nature solely so it can impinge on others' field-of-view in order to be sold? I don't think it's bad for them to register the availability of said couch in the hypothetical regulated marketplace.
And, for those who consent, they can ask to have relevant categories of ads pushed at them. But leave people like me out of it. No such consent can be obtained when you just e.g. put it on a billboard.
Yes, I know what I'm saying is probably naive and would never work, or something, or that's where governance is supposed to come in, but it's a nice dream.