Comment by paulryanrogers

Regulators are asleep at the wheel in the US. Companies with a overwhelming market share of search and email can and do leverage that to push users to their browser, then their browser to track users.

It's becoming about control of eyeballs and defaults in several dimensions. Lazy and captured regulators are easily convinced to scope the definition of any given 'market' in whatever way their former or soon-to-be employers demand.