Because like any system to have trust it must be co-opted and regulated by the government and/or corporations and building the infrastructure and tools that make integrating with the block chain take time.

Also when you say that there is nothing that blockchain does that can’t be done by other systems, do you include up to the second global access and management of a decentralised ledger that can be directly integrated into all software systems with inbuilt security?

Because it seems like all those technologies are privately owned and managed, don’t have any interest in developing or providing global integration and access.

Blockchain has the potential to be the foundation of globalised services and systems, and crypto the basis for a world currency, just because we haven’t gotten there yet is like saying the wheel was useless before we invented cars. The use cases and implementation of the tech might currently be niche but that’s because we’re still developing the right vehicle for it to carry.