As a user, you don't get equal access to the Blockchain. You can't make any transactions unless someone wins the mining/staking lottery and then writes a block

As a user, you don't get equal access to the Blockchain. You can't make any transactions unless someone wins the mining/staking lottery and then writes a block for you, an operation that is incredibly expensive to achieve. While the Blockchain itself is a distributed ledger, your access to it is not decentralized.