Entitlement and Acquisition
    Sparrow’s acquisition is a success story. Indie devs make a great product,
    build a customer-base, and are rewarded with a buy-out from a big company
    and they get new jobs with that company. It might not be what your
    particular goal or end-game is, but it is a success.

From an end-user perspective, having software you use and rely on on a daily basis completely abandoned is not a successful outcome. The Sparrow devs may have won, but Sparrow users have lost.