> 99.9% of the world population couldn't fathom how Internet would take off back then when it launched.
The dotcom bubble was fueled by speculation in how useful the internet would be. Granted, it busted but many companies survived it and some are now the biggest companies in the world.
> That was why it was not mainstream for a long time until it took off.
Internet growth has been incredibly fast: https://en.wikipedia.org/wiki/Global_Internet_usage
I can see some utility in blockchains. However, my main point is that the economics of them make them terrible for 99.99% of problems.
Internet: 10 orders of magnitude faster/cheaper communication than before.
blockchains: 10 orders of magnitude more COSTLY.