The less we use cash, the more we pay people through a corporation. The last remaining use of cash and direct payments is Tipping.
Everything else we must pay through a corporation. We cannot pay another human unless there is a corporation involved. As cash disappears this becomes a final fact -- a corporation involved in every financial transaction you pursue. In each transaction, the corporation is taking their percentage but also controls and monitors your transaction.
BTC
Bitcoin
I don't exactly understand what you mean by corporation, either its company or bank!
But the cash aka fiat itself is enough whether we use digitally or physically because the money is nothing but paper printed out of thin air and the supply increases every year so the payment processor getting a percentage is nothing compared to the money we actually use don't have any intrinsic value at all.