Every enterprise is being told to go agentic. Meanwhile, the platforms holding your most critical business data are tightening control over how AI agents can access it. SAP made that move explicitly. Other software vendors are doing the same thing, more quietly. This is not a SAP problem. It is an industry-wide structural shift. And it has a known solution. Enterprises solved this decades ago with mainframes. The pattern is the same: extract once, stage the data, let agents consume freely downstream. The trigger then was cost and scale. The trigger now is agentic AI. The architecture that solves it has been in production for years.