Media and tech companies? The actual leadership of these companies may be libertarian in some cases or even occasionally espouse certain liberal viewpoints (fellow Georgian Ted Turner's environmentalist activism comes to mind), but they are not "leftist" by any stretch. We are after all talking about massive for-profit publicly-traded corporations, entities that are going to have far more to gain from the GOP's economic agenda. These companies are capitalist through and through. Some of them may promote socially liberal ideas because there's a market for them, or because the leadership may genuinely hold socially liberal opinions and think the alt-right or Nazis are disgusting. But the idea that these huge corporations harbor some sort of socialist or otherwise left-wing agenda just plain doesn't make any sense. When conservatives do something like call CNN the "Communist News Network" I can't help but roll my eyes, as if I'm supposed to believe that a division of WarnerMedia, itself a subsidiary of AT&T which is a major Fortune 500 company, is somehow a Leninist front group. Also, if you actually watch CNN or MSNBC, you'd be hard-pressed to find any genuinely far-left viewpoints. I can't ever recall Anderson Cooper or Rachel Maddow arguing for the nationalization of the means of production or for a proletariat revolution to rise up and smash capital. Sure, MSNBC's prime time talking heads spend much of their time criticizing Republicans, but I've been listening to them for a very long time and I never got the impression that they were radical leftists. They're bog-standard liberals, and the corporate leadership at Comcast could nip that in the bud in a heartbeat if they wanted.

And let's not forget all the blatantly conservative elements in the media, namely Fox News and most of talk radio, which are certainly popular enough to warrant being called "mainstream." They are aggressively right-wing, increasingly so with each passing year, and are essentially propaganda mills wholly unconcerned with honest reporting of the news. Their entire business model is predicated on keeping the GOP base outraged and absolutely terrified that the commies are coming for them. I suppose if you listened to Rush Limbaugh all day or the Hannity/Tucker/Pirro/Ingraham parade every weekday night and took what they had to say seriously you'd probably think anyone to the left of Reagan is a literal Stalinist, but as far as everyone else is concerned the idea that the American news media writ large are actual socialists is laughable. Also, right-wing opinion leaders have far more clout and influence over the GOP than the likes of MSNBC have over the Democrats. Conservative talking heads aren't just opinion leaders. They are kingmakers. They have their audiences in thrall, and can mobilize them to primary any Republican seen as insufficiently conservative, and the goalposts of what they consider conservative keep moving further to the right every year.

As for academia, sure, college professors might be more liberal than most people on average, but aside from the rare tankie or militant gender studies professor, college professors are not some horde of Marxist revolutionaries. Conservatives may be under-represented, but I think that's because American conservatives increasingly want to be told things that just aren't so. More than any other group of Americans, they believe that reality should conform to their worldview. If reality clashes with their beliefs, then reality must be wrong. Colleges teach students facts about the world, facts that most conservatives find threatening to what they perceive as traditional values. Conservatives want to be told that they live in a world that's only 6000 years old. They want to be told that they can burn fossil fuels and expand industry and grow the population indefinitely and that there's no consequences for those things. They want to be told that homosexuals and transgender people are immoral deviants. They want to be told that supply-side economics works. And, especially if they're from the South (and I'm from the heart of the Bible Belt, where there's more Baptist churches per capita than people), they want to be told that the Confederate States really weren't such bad guys.

But of course academia isn't going to tell them those things, because those things are quite simply just plain wrong. Biologists tell them evolution is real. Geologists tell them that the Earth is billions of years old and that Noah's flood never happened. Climatologists tell them that global warming is real. Medical researchers tell them that nobody chooses to be gay and that there's nothing inherently abnormal or unhealthy about it. Economists tell them that cutting taxes for the rich doesn't stimulate the economy. Historians tell them that the Confederate States existed purely for wholly racist reasons. Academia essentially tells them the uncomfortable truth, that some of their most deeply-held beliefs are lies, and in response they call foul. Rather than re-examine their own worldview, they'd rather wallow in willful ignorance, deny reality, attack academia, and act like those who contradict their beliefs are part of some sort of nefarious socialist cabal out to destroy America and brainwash their children.

So, of course academia is going to skew liberal when American conservatives in general have a rather tenuous relationship with physical reality. Most conservative "intellectuals" would rather go work for a right-wing think tank or be a talking head for one of their propaganda networks. Sometimes you'll get a notable conservative that isn't a reality-denying wacko, but they're getting fewer and further between and increasingly likely to be excoriated as a "RINO" or worse by their own compatriots.

did nothing to stop what?

did you actually watch the video and understand what was said?

or did you just jump to a conclusion because of what you were told to think?

Well aren't you naive.

Told to think by whom? I'm curious what your conspiracy theory is.