1. What do applications require in a Platform? 2. Which of those requirements are met by a blockchain?

I don't want to go by the hype being created by the software biggies, bank consortiums or some optimists who go to the extent of saying that blockchain solved all of the remaining unsolved problems in computer science.

I can see that the "XXX-as-a-service" guys just want to be in a position to say "YES", when banks come back to them asking "Do you do blockchain thingy"?. And consortium members don't want to miss out the blockchain party. They don't want to be using old technology if their competitor is going to use the latest stuff and boast about it too. They also want to reduce their costs, may be - but not if everyone else can also do that.

I do agree that blockchain did solve some problems in a very natural way. But everyone seems to be very busy with creating more hype without understanding the fundamental goals and purpose, the blockchain is designed to serve. Just because something is extremely good at something, can we use it just for everything?

Security?? Which parts of it? Can banks do away with linking user info with their accounts or wallets?

Scalability?? What's new?

What are we missing in the existing Platforms to build an application, that is now suddenly available in a blockchain?

Am I missing something?