The reason I think that is very simple.
The blockchain allows us to create scarcity in an otherwise abundant medium.
This means that potentially (and yes it will take time) we will see be able to mimic the physical space and create items that are to some extent unique (even though the can be copied. The art market is based on exactly this principle)
It's extremely interesting when it comes to things like secondhand markets where we can buy and resell assets without having to deal with licensing issues from some central owner.
Things like ebooks that can increase in value because of the people who owned them, digital "Pokemon cards" to create unique digital assets, virtual goods without the need for the original creator of the game to be up and running.
In other words, it allow us to have a digital world where what we do creates a unique footprint and doesn't just get's obsolete and where the end user gets to tap into the value chain of technology even if they are not able to work in the technology space.
These are some of the things I believe is interesting. I am not anarco-capitalist or libertarian and I don't care if it was pushed primarily by them just like I don't care that my country was based on wars and slavery and killing other people.
The blockchain, the way I look at it at least, is a "protocol" like TCP-IP.