In 2008 more than 115,000 albums were released, but only 110 sold more than 250,000 copies, a mere 1,500 topped 10,000 sales, and fewer than 6,000 cracked the 1,000 barrier. He doesn't say so in the article but rather in the comments section that these are based on SoundScan numbers, so it is assumed they are primarily dealing with physical albums sales and not digital. Read Greg Kot's full article here
Of course, the folks at the labels who are responsible for signing the acts will most likely point their fingers at "downloaders" as the culprit and not the lack of music that people actually want to buy. That might have something to do with it, especially coming at the end of the decade which probably had the least musical innovation since the advent of Rock and Roll. - Look back at the top sellers for the year and see if you can spot any innovative NEWER acts?