Watch someone build the weekly report and time each part. The exports are the fast bit. The slow parts are everything around them. Remembering which saved filter produces the right view. Pasting into the template without breaking the formulas. Then discovering the CRM total doesn't match the dashboard, so everything stops while someone works out which system is lying. Then the write-up: what moved, why, and what to say about the metric that dipped.
The real cost isn't the assembly hours, and those are real enough. It's that the job lands on someone senior enough to catch a wrong number, which means a person you pay for judgment spends a block of every single week doing collation. And when that person is on vacation, the report is late, wrong, or quietly skipped.