The key in your explanation is "without any middlemen". It's really easy to build a system that lets you send tokens to other people with low transaction costs: just trust someone to run a central database of all the account balances. This is how you can trade Team Fortress 2 hats with virtually no fees or settlement time, for example.
What blockchain ostensibly allows you to do is create that system without having to trust anyone to run the central database. But why would Coca-Cola ever need to do this? There will always be a trusted central party who can maintain the Coca-Cola bottle production database: the Coca-Cola company itself.
What blockchain ostensibly allows you to do is create that system without having to trust anyone to run the central database. But why would Coca-Cola ever need to do this? There will always be a trusted central party who can maintain the Coca-Cola bottle production database: the Coca-Cola company itself.