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Are Cryptocurrencies And Blockchain Technologies The Next 'Industrial Revolution'?
A lack of middlemen has demonstrably proved to be a negative in many cases.
In the crypto universe, "owners" have no recourse to retrieve funds which have been stolen from them. E.g. if a private key is compromised and funds are stolen, then the owner has no right to those funds again. Therefore, the concept of ownership is naively defined as "that which you can defend".
If you send bitcoin to an incorrect (or invalid) address, there is literally no way to get it back. Banks provide guarantees against this kind of problem.
That claim is only valid to the current situation we are, as in "baby steps". With more dApps and evolving blockchain technology, these human mistakes will undoubtedly cease to exist.