nprnews_____ = ||| lubuntu at wor2|||WATCH: Heads Of Amazon, Apple, Facebook And Google Testify On Big Tech’s Power||| kickerpage = |||no kicker pagenpr for NPRNEWS||| summarynpr = |||The CEOs plan to tell Congress on Wednesday that the giant American tech companies do not stifle competition, saying the concern that too much power is concentrated in too few companies is unfounded.