I use bitcoin as an investment place only and I forget it to pay something that I want. Actually, I don't like to buy something through online shop and anything related to it. I'm scared if I buy a stuff and when it comes to my hand it is different and far from my expectation. I believe bitcoin will be use by most its user as an investment place. They will buy something with use money fiat that common to use and there is no someone who will forbid it.
Using bitcoin as an investment is the best thing that we can do than to use bitcoin to buy something on the internet or in real life. While there is not many online stores or offline store which accept bitcoin, we can use save the bitcoin and convert it into cash. I don't like to use bitcoin to buy something or buying from a store online. I feel not comfortable, and besides that, I cannot touch the product I want to buy. Sometimes the product will not be the same as what they offer, and that is the other reason why I don't want to buy by the online shop.
This is 21st century and Amazon is the biggest place to shop your things and the things has changed from you mentioned.Yes there maybe fake products can be sold but you can see the previous user's reviees before you purchase any product.
Amazon still accepts bitcoin but you can convert bitcoin into cash and use it to buy things from Amazon.