The technology revolution has delivered Google searches, Facebook friends, iPhone apps, Twitter rants and shopping for almost anything on Amazon, all in the past decade and a half.
What it hasn't delivered are many jobs. Google's Alphabet Inc. and Facebook Inc. had at the end of last year a total of 74,505 employees, about one-third fewer than Microsoft Corp. even though their combined stock-market value is twice as big. Photo-sharing service Instagram had 13 employees when it was acquired for $1 billion by Facebook in 2012.
Hiring in the computer and chip sectors dove after companies shifted hardware production outside the U.S., and the newest tech giants needed relatively few workers.