I guess it's just the matter of time. Cryptocurrencies are going to replace many regular ways of using money and shopping is one of them. Honestly whenever i buy something in the internet i'm disappointed if i can't pay with cryptocurrencies - the fact that i wouldn't use for example my bitcoins to pay for something doesn't matter. We are oftenly feeling more comfy with cryptos than with regular money and there's nothing weird in it.
There is a lot of places like restaurants or cafes (for example FuturoNet Cafe in Wrocław where FTO are accepted) and websites where you can by cryptos like BTC. I think it will develop soon
FTO is just one of the many examples, i like the way they are trying to expand - on their medium there is an article about the changes they want to bring:
https://medium.com/futurocoinfto/a-futurocoins-masternode-5d51b23628e6