I'm not sure why anyone has ever considered anything on the internet private. Ever.
In order for me to buy something on Amazon, it isn't even just about Amazon tracking which pages I look at, which pages I linger on, which links I follow, or which reviews I read. It's not even just about selling that data to Google so the ads for what I just looked at follow me elsewhere. It's much more fundamental than that - that the physical layers between me and Amazon also have to be able to read, understand, and broadcast that process, in order to make it possible for Product A's Amazon page to make it to my browser.
In between me and Amazon is not just my ISP, in my locality, but numerous other companies with physical equipment that processes my requests for information and links that I click. How could it be controlled? How could it be private? Sure, you could encrypt the content of the packets, but that doesn't change the ability to track that I requested information from Amazon and that Amazon sent some back.
The internet is fundamentally not a private environment, even when encrypted. It never has been. We're pining for days when people simply worse at using our data, not for days when they didn't have it.