1. except the web, the internet, domain names, email, tor onion, generally any communication protocol etc. Also, any company that scales needs multiple databas

1. except the web, the internet, domain names, email, tor onion, generally any communication protocol etc. Also, any company that scales needs multiple databases in multiple data-centers. They cache content all over the world. backup and recovery is usually done in different geo regions. in fact generally you need some kind of redundancy to manage single point of failure problems. would you use the internet if it was managed by one company? Blockchain has a single purpose a way to bootstrap a distributed platform/protocol.