@Filiki,
Follow the money.
In 2016 election, most of Sanders campaign contributions were in small amounts from individuals. IIRC it was on average like $22.
Clinton’s contributions were generally large amounts from Wall St. and many of the tech companies you mention. IIRC Zuckerburger was sitting front seat at one of Clinton’s rallies, and some of Googles corporate staff (like, big wigs) went to work for Clinton’s actual campaign.
The centralization of power of corporate America and DC continues.