Maybe this isn't a bad analogy. I'm sure you are aware that Linux is the most used consumer facing OS today (android). So sometimes these prophecies do come true, just almost never in the way you think in advance.
Extrapolating the analogy, this leads me to believe that there will eventually be a company that uses the blockchain to deliver a killer app, but it won't be Bitcoin.
Linux is on the desktop. It's just the definition of "desktop" has changed... The devices people use day-to-day are predominantly either iOS or Android, just like how the devices people used day-to-day in the 90's were Windows.
Yes! According to this new definition, about one out of every three devices run Linux at the moment.[0]
I hate this "Linux of the desktop" analogy because people really fail to realize that it has already happened and that they have missed it. I blogged about this a couple of months back: https://blog.r3bl.me/en/year-of-linux/