If you're a technical person, you don't need to trust Blockchain technology; you can verify that it works on your own. If you're not a technical person, you can find independent technical experts to verify it for you. Much of the value of a cryptocurrency can be attributed to the fact that it's difficult to coordinate a large number of people to agree on changes. Also, because most blockchains are public ledgers; it'…
You can borrow cryptocurrency.
You can invest cryptocurrency with terms that are bad for the business you invest in.
Corporations can use cryptocurrency.
What, exactly, have you changed?