Since launching in Moscow three years ago, Uber has had a tough time displacing its local counterpart in Russia. Yesterday the world’s biggest ride-share startup gave up on the quest and inked a deal with Yandex.Taxi. The newly formed venture is valued at $3.7 billion and is owned 59.3% by Yandex and 36.6% by Uber, with the remaining 4.1% held by employees.