Bitcoin is all about decentralization & concensus.
Simply put, every transaction/event, when recorded on a chain, is verified by all the members in the chain.
Once recorded, the data is immutable, which for sure, is better than conventional ledgers.

Banks, for example, are the central authority, that control cash flow and charge transaction fees for every movement of an individual's own funds, payments, earnings or savings.
Bitcoin, on the other hand, is the currency of the future, with minimal transaction costs, and elevated verifiability in close comparison to fiat currencies.

It sure looks like the payments infrastructure, across the web, might shift soon on blockchain.