Let us be realistic and think a little. Organizations (governments and companies), individuals seek security and protection of their information. Who opens the door of his house for access to everyone? The blockchain is public and transparent. It is the paradise of voyeurism: see what everyone does without being seen.
First, few organizations can accept such a system without compromising themselves. In addition, only a small number of techno individuals can access the blockchain and then interpret the information.
And corruption will continue outside the blockchain ... on a golf course, in a pool room, in a gym or in a bar.