Now, that’s easy to say.
But, blockchain today is what docker was 18 months ago.
Startups got funded for doing “Docker for sandwiches”, or “Docker for underpants” (not really, but bloody close).
Talks were accepted at conferences because of the title “Docker, Docker, Docker, Docker, Docker” (really).
And today it is blockchain.
https://www.coindesk.com/dont-use-blockchain-unless-really-need-one/