American corporations also help thugs, racketeers, and police target you. Did you not recently see the scandal with police and repo agents (and anyone else willing witu the money) paying for location data of users?
Besides, can you not simply uninstall or not use Yandex or Mail.ru?
You can buy at least Americans' fine grained location data, sold by corporations. The government in fact argues that it's not subject to fourth amendment protections since it's just available on the open market.
You don't have to use dark web here either, the data brokers are regular companies with physical addresses and everything. It's just not common because people don't know about it, but there are no practical or legal barriers.
And I know about this from outside of the verge, I just believe in providing citations.
Besides, can you not simply uninstall or not use Yandex or Mail.ru?