Note that for years progressive voices have complained about censorship in media and lack of representation but they never had the political power to investigate anything.
Moreover, after the communications act of 1996, consolidation in media allowed the likes of Fox and Clearchannel to build conservative media empires, and while progressives complained and demanded a fairness doctrine or FCC regulation to prevent too much ownership, there was no zeal by GOP to do anything about it.
This looks to me to be a pure political play to the base and IMHO it is cause for concern that an administration that frequently attacks media and calls them an enemy is constantly attacking tech companies, not for the kinds of economic arguments economists would make, but for politically vindictive reasons. It looks like using government power to advance the interests of a political party.
Basically, opposing Trump or the GOP paints a target on your back, so expect corporate interests to fall in line and suck up to avoid a shakedown.
The GOP now controls all three branches of government, a majority of state governments, despite consistently losing the popular vote. Can they really claim they’re being harmed by tech companies, because if there is some conspiracy to silence their message, somehow they’re still winning like gangbusters.