Excel.

Business LIVE by Excel. They have processes that automatically output and input via excel.

Users spin up spreadsheets with tables, every day, for quick analysis of large datasets. Open Office devs refuse to ever implement tables.

There’s no way an extant business can switch to even Open Office, let alone Linux, and realize an actual cost savings in a reasonable time frame.

Now, we can implement new back end/middle systems using Linux as appropriate.