Do you think people who own Bitcoin will pay for their daily purchases? Everyone remembers that pizza was worth 10,000 bitcoins, now it would be a huge fortune.
Anything is possible to happen in the future. It bitcoin had been created then I don't think your idea would not happen in the future because btc had grown tremendously and it became world wide scope already. I mean in terms of popularity and its use with all the people who knew about cryptocurrency I think we will reach that point where we will be able to make our normal purchases using btc and altcoins.