Which countries are the  powerhouses of Healthcare Industry?

I was very surprised to see China and India in the top 4.  I was not surprised that US and Germany leads the world in healthcare. 

Ranking of Country By No of Healthcare Self-made Billionaires

Rank	Number of Healthcare Self-made Billionaires	Country Name
1	30	China
2	17	US
3	11	India
4	9	Germany
5	3	South Korea, Canada
8	2	France, Brazil, Italy
9	1	Japan, Thailand, Israel, Hong Kong, Belgium, Russia. Finland, Turkey, Singapore, Swiss
total	89

As from the above table, China is number one in producing 30 Healthcare SMB.  US is number two  at 17 and India at number three at 11.  Germany is number 4 at 9.

The big four (China, US, India and Germany) together made up 67 of the 89 healthcare SMBs or 75%.

Well, very tiny country like Finland contributes 1 SMB, and very large country (largest by area) Russia also contributes 1 SMB.

Now  I have some unaswered questions:  
Why is the number of healthcare self-made billionaires in UK and Russia so low?  
I don't have an answer.