In yet another example of Spotify’s dominance in the music streaming industry, PC technology overlord Microsoft has bent the knee by announcing the closure of its Groove Music Pass service by the end of this year, and imminent migration of Groove subscribers over to the Swedish streaming service. Microsoft had a decent but halfhearted stab at challenging Spotify, and iTunes before it with the Windows Store, but its services were not revolutionary enough and never really stood a chance. Microsoft made moves such as coming out with its own PlaysForSure DRM for Windows Media Player way back in 2004, but in today’s fierce music market and mobile app battleground, Groove had no tricks up its sleeve, no stand out features…