I think Blockchain is more important for us then cryptocurrencis.
Should we not focus more on Blockchain then caring about cryptocurrencis?
As Blockchain is capable of removing centralised system which is the root of many issues the world is facing currently and it also has the capability to empower commoners.
How to meaningfully separate blockchains from cryptocurrencies though?
Without issuing cryptocurrency as the reward for securing a blockchain, you don't get public miners (or stakers, or masternodes, or whatever concept you may follow) to secure the network.
Without the public securing a blockchain, you need to rely on trusted, federated entities to do the job for you.
And once you have to rely on trusted, federated entities, you are effectively back at having a centrally controlled system.
In other words, I'm still not convinced of the viability of permissionless blockchains. If anyone can convince me otherwise I'm all ears.