Why are sales through Google Play going anywhere but in the US?

Question

Android

For about a year I have been selling applications through Google Play, translating into several languages ​​(primarily English, Spanish, German). And the statistics are very interesting.
Buy most of all from Russia. The rest of the countries are on average distributed as follows:
1. Russia
2. Ukraine
3. India
4. Germany
5. Arab countries
6. USA
7. Great Britain
... other countries

I wonder why it is so bad to buy from the USA? I thought the matter was in the account - I started a purely American account, the withdrawal to an American bank - the same effect, purchases come from anywhere and very little from the USA. I hired a professional translator (I thought maybe typos scare away) - it didn’t help. Can you suggest what could be the reason?

Answer 1

Americans use iPhones.

Answer 2

Apple dominates!

Answer 3

Excuse me, but why the USA?

Answer 4

What's the application? Maybe the American market is just not very interested in this?
My states are in first place in terms of purchases - about 40% of all countries.