This is the part that matters when you are three years into a contract and your priorities have changed. If the application owns the data, replacing the application means rebuilding everything underneath it. If the foundation is yours, replacing the application is a procurement decision, not a migration project.
So: run DAX's application if it fits. Run the BI stack your analysts already know. Build something internally. Point an AI agent at it later. The foundation does not care, and neither do we — that is the whole point of building it this way.