And most of them don't need Bitcoin due to their centralized nature. Traditional database do the jobs better and if they need some kind of redundancy they can use distributed / sharding database.
I'd say not a single of the mentioned applications needs bitcoin at all.
That actually was the point - to have applications for a blockchain excluding cryptocurrencies.
Just because centralized databases are better at some points, this doesn't mean that they should be used for all of those applications.
One could say the same about bitcoin. Why use a blockchain if you can use a bank ?
The trustless and decentralized aspect is what makes it special. And this can also be desired in a supply chain, identity management, IoT, etc..