The second point people often forget is that nobody owes them shit. Some people seem to have an unbelievably difficult time understanding that "free speech" does not mean "the freedom to say whatever you want without any consequences." If you say something fucked up in a public forum, people and businesses are exercising their free speech when they react to it. If a comedian makes rape jokes and people don't like them, that isn't the audience censoring the comic any more than someone not liking a meal is censoring the chef. Nobody has to support anyone else's shit sandwiches.
Similarly, a bunch of companies, including anti-masturbation titan Kellogg's, pulled their advertising dollars from the "alt-right" "news" outlet Breitbart. But rather than waging war on free speech, Kellogg's is simply keeping their brand from becoming synonymous with shriveled dog crap. Breitbart, champions of the free market (meaning free for them, not for advertisers) and defenders of harassment everywhere, responded with cries of "Censorship!" Their response article, in which they refer to themselves both as a "conservative media giant" and "one of the world's top news publishers," is like a Klein bottle of twisted logic -- it has no inside, no outside, and you'd think it would be impossible, but people are selling it on the internet. Note: In an effort to not further spread mental garbage around the internet, I'm very intentionally not linking to Breitbart here, but I will give you this weirdly gross animation of a Klein bottle!
First, they call Kellogg's bigots for not doing business with them merely because their site regularly attacks women, Muslims, and transgender people. And if they can't attack women and minorities, who can they attack?! But the absurdity goes further. They imply that a company not wanting to do business with them constitutes censorship. That suggests that the only way to preserve our freedom of speech would be to somehow force Kellogg's to pay for content that they fundamentally disagree with. It would take some Simone-Biles-level gymnastics to get your head around that.
But that impressively flexible thinking can be seen all over when businesses "silence" difficult people with the despotic technique of "not doing business with them." That's just as true of Reddit as it is for quaint physical businesses which will be gone after the Singularity. That guy who got banned for life from Delta airlines didn't get banned because he supported Donald Trump; he got banned for aggressively harassing a plane-full of people about it. The exact same thing would have happened if he were delaying a flight by shouting and clapping about puppies being cute. (It just would have been much less expected and much more entertaining coming from a guy in a Gas Monkey Garage T-shirt.)