All these were great visionaries in their time, but now probably long-in-the-tooth. I feel like there are countless examples of new paradigms that the old guard

All these were great visionaries in their time, but now probably long-in-the-tooth. I feel like there are countless examples of new paradigms that the old guard felt would never work out. Despite the hype and the early days, cryptocurrencies have a very similar usage pattern as credit cards. I would argue that credit cards and the way we use them are pretty much digital currency. That being said, there is a huge amount of improvements needed and the over-hype is just a turn-off for most.