Accountability in organisations – what % is required, management coach asks

John Izzo talks about a bank that operated on a 100% responsibility/ 0 excuses policy. The premise was that every employee, regardless of their role, were 100% responsible and accountable for doing the very best for their clients and the organisation itself. To hear the principles behind it, watch  https://www.youtube.com/watch?v=-WdpvaMX1Gw

What barriers would get in the way of it working in every organisation?