When you say consumer protection, you mean protection from shady internet sellers, right? Well, that's not a bitcoin problem. Merchants already offer consumer protection for digital payments on the internet.
1. Ebay protects buyers by guaranteeing that you'll get what you pay for or your money back.
2. Amazon protects consumers by facilitating trade between online entrepreneurs and shoppers.
Both of these sites do not accept USD directly, they mainly take paypal and credit cards, which are both digital overlay systems with MORE risk than bitcoin, ironically. But by adding significant fees to compensate for fraud, these companies together with credit card and banking industries have found a way to make it work.
You`re looking at this from the wrong angle. Consumers can reasonably expect a smooth transaction when they deal with huge, established retailers such as Amazon or Ebay, but there are thousands of other merchants online, aside from just these two examples. If I`m looking for a specialty item or just hunting for a good price on something, I`ll routinely use other online stores, sometimes sites I`ve never heard of before. I can do this because I know that if something goes wrong and I get scammed, my credit card company is going to perform a chargeback for me. Additionally, the site won`t exist for long if they`re routinely ripping people off, because the chargeback is a deterrent to even try.
If we were all to start using only bitcoin, all these smaller companies will go out of business because people will be scared to death to send money to anyone, in fear that they`re being scammed. There are many bitcoin scam sites out there right now that have been operating for months or even years, essentially with total impunity. They can scam people and there`s nothing anyone can do about it. I don`t want to live in a world where I need to perform in depth research on message boards and blogs before making any purchases to check the reputation of a company, and then just pray that they deliver on the goods.
How you can state that paypal and credit cards are higher risk than bitcoin, I have no idea. No offense, but you must be delusional. If you buy something online with bitcoin and never receive the product, you`re completely at the mercy of the merchant. That`s not a good feeling at all. With a credit card all I need to do is talk to the bank and they`ll mark it as a fraudulent charge.