Firstly it wasn't me. I am not sure it would be too hard in the right circumstances but I wonder what you would do with that many points!

My business is small, we do have 4 heavy travellers including myself each taking 50-100 sectors each year. We travel about 80% on QF due to superior scheduling. All flights are purchased via a business AMEX that offers triple points of QF spend plus 1.25 on other spend excluding utilities. All the points flow to our Qantas Business Rewards accounts plus the QBR account earns some points for each flight taken by the team in addition to the travellers personal points earn.

I receive the benefit of all the AMEX earn points plus the QBR points plus my personal earn points from flying plus any other points I earn from a private QF linked card for personal expenditure and any other auxillary spend.

I receive about 5-700k points per year from this.

A privately held large organisation could easily target earning to a single member many times what I do if they wanted to make the effort.

I do not target spend on utilities or all the minor small deals on either an AMEX or a Visa/Mastercard linked card offer but there would be plenty of upside to allow a huge earning potential if one could be bothered.