Traditional business intelligence leaves executives with the same amount of work, but with even more information to sort through. The number of decisions, the unit of work, is not diminished.
Traditional Business Intelligence asks, "What information do you need to make better decisions?" The outcome is hopefully beautiful well designed reports and dashboard that support decisions. The problem is that you still have to make decisions.
Decisions are work. Having more information doesn't reduce the amount of work required to make decisions. In fact, it makes decisions more work. More information does not create less work.
The flaw is thinking that the business decisions are calculations.