Are you 100% sure Yandex has not provided any funding to Mozilla? "Following our review in 2014, Google remained the default provider outside the US, Russia, Belarus, Kazakhstan, Turkey, China, and other regions where we had search agreements."
> Are you 100% sure Yandex has not provided any funding to Mozilla?
I am 100% sure it has. But the point is that all search engines are willing to create these funding deals, so that leaves the freedom to pick the ones that you think are best for users.