Mossberg: My tech report card for 2016

For lots of people, the year 2016 can’t end soon enough. Whether it’s the bitter, divisive presidential election; the misery in Syria; the horrible terrorist attacks in various cities; or the deaths of beloved figures, it’s been a lousy year.It’s also been a mixed year for the major tech companies, with a few big strides and many other missed chances. Their leaders sure didn’t look happy at the year’s end, gathered at Trump Tower last week with a soon-to-be Pr