I've thought before about online commerce, and wish we could find some way to adopt a Vending Machine model.
A vending machine is autonomous. It neither tracks nor engages the customer. It takes your money, and dispenses product. Since cash is untraceable, it keeps no record of what was bought and by whom. I feel at peace knowing I will give a vending machine a dollar, and I will receive a Coke, without fearing that I will start seeing targeted ads on my browser or in my inbox showing me more Coke products.
The problem, of course, is that the amount of money lost to a vending machine is negligible. And so if the soda machine eats my dollar, I will probably swear for a bit, but I'm not going to do much to seek recourse. That model would be difficult to extend to, say, Amazon, where I might buy an $800 laptop and need Amazon to have a record that I bought it in case they ship me a lemon.
Nonetheless, I still feel that the Vending Machine Model is something we should aspire to in the e-commerce age, even if we haven't reached it yet.