(I object to you calling revenue meaningless when you brought up country population.)

World medicine spending[0]: $1.2 trillion

US prescription drug spending[1][2]: $348 billion (29% of world spending)

US drug advertising[3]: $30 billion (1% of US drug spending)

Health insurance net earnings[4]: $23 billion (0.8% of US drug spending)

[0] https://www.statista.com/statistics/280572/medicine-spending...

[1] Median estimate from https://www.healthaffairs.org/do/10.1377/hblog20180726.67059...

[2] Another source puts the US proportion of pharmaceutical revenue at 33%: https://www.statista.com/statistics/784420/share-of-worldwid...

[3] https://www.seattletimes.com/business/us-medical-marketing-r...

[4] https://naic.org/documents/topic_insurance_industry_snapshot...