Remember the baby bells? In 1982, AT&T (ma bell) lost an anti-trust lawsuit and was broken up into 8 companies (the baby bells).
Guess what happened since? If you guessed they merged back together, you would be correct. The baby bells merged back together and became 3 companies - AT&T, Verizon, and CenturyLink.
For those who are customers of AT&T - how do you like your service? Is it as good as Google?
Oligopoly is the new monopoly. Financial services, airlines, oil majors, media, pharma, auto, etc. Those are the industries that need breaking up. You pay for their services / products and they price fix (airline baggage fees, overdraft fees, etc), you don't even pay for Google. You can easily use duckduckgo and delete your FB / Insta with no consequence.
Edit - to address the comments saying that the tech companies should be broken up: sure, but how exactly? Google and Facebook in particular. You don't even pay for their services, so you (the citizens) can't claim consumer protection from their business. Only the companies / individuals that pay for Google and Facebook ads can.
Again, I get the frustration of the times and misinformation sucks, but Google and Facebook are not the cause. They are the means of distributing info (including ads that are sometimes just fake new), not the root source of all evil.