True, there are few projects that planned to be online stores that will only accepts crypto as payment but failed, some raise money but still we got nothing, some don't even launch after waiting and waiting, I don't understand why this use case failed won't work out
I know some of these failed projects and one of them should be storiqa which has been turned into the scam project. This is a good idea but it's still too difficult to be created consider the blockchain is still focus into the financial economic system. That means if there will be less parties will try to pay their attention into this.
I had confidence on storiqa when it first came out, I thought it will be good so I invested some money, fortunately I only invested what I can afford to lose at the time and later I knew I made a wrong decision, the project is a complete failure, full crypto online store aren't going to happen unless existing stores decide to start accepting crypto as means of payment