So you're only allowed to sell stuff nationwide if you're big enough? Oh wait, there's EBay... I am sure solutions for this will spring up if need be. There's money involved, after all.
Edit to add: These solutions will not be as convenient as the current state of affairs, I contest that.
Nobody needs to wait on the internet - you can just go right ahead and type!
"there's EBay..."
You're saying that for a business to be successful on the internet they need to get their money from buying and selling goods on eBay instead of running adverts? Or that they'll sell adverts on eBay? I'm puzzled.
No, I tried to give an analogous example. Selling goods <-> providing "free" content. I am old enough to remember a time without internet where any business had a really tough time to sell nationwide. Big players had a huge advantage. With Amazon Marketplace or EBay that's much easier now. therefore I am pretty sure when targeted advertizing gets more scrutiny that alternatives will pop up. Heck, even Google might then provide such a service if their current business model is at risk.
Edit to add: These solutions will not be as convenient as the current state of affairs, I contest that.