We’ve known for a while that tablet market growth has not been what people expected. Apple’s double digit sales decline of iPad units in the March quarter was one ill omen. Nevertheless, the new Morgan Stanley report is grim reading: Widely followed analyst Katy Huberty is slashing her 2014 tablet growth projection, all the way from 26% to 12%. It is extremely rare for an important product category to see such a drastic projection cut without an onset of a recession. Back in 2008, handset sales projections were cut steeply as consumer moods from the United States to Asia blackened abruptly. But tablet growth estimates are now coming down without a macroeconomic shock. The most likely reasons for this sudden decline