Basically everyone seems to know how terrible everything is, it just doesn't seem to matter. It's weird how accepted the capitalist ideology is while being generally rejected colloquially.
It's almost as if people have been indoctrinated into believing that there is no alternative.
Somehow the "human" drive to competitiveness has overcome the realization that everything is fucked up. People are so enamored with the idea of beating other people that they don't stop to realize that they could get twice as far if they quit competing and worked together. So, I don't think they see it as "capitalism". They see it as a giant game that they're playing against everyone else, winner take all.
Haha McDonald's man make $10/hr but I make $12.50. I WIN GAME GIMME BITCHEZ!!!1
So deep into capitalism they mistake it for human nature.
That's the funniest (as in like, haha we're all going to die) thing to me - almost everyone agrees that every corporation or large company they know anything about is horrible. They know their bosses are assholes and the owners are even worse. They know that stuff is getting more expensive while the quality/size goes down. They know the planet is burning and their government isn't really doing shit. They know x institution is corrupt and racist. They know their country has a homelessness problem and more than enough vacant homes. They're all just hoping that one day the person they vote for will magically fix it, while shouting down anyone with actual solutions.
Adam Curtis made a pretty cool documentary about this, called Hypernormalisation.
"People accept the reality they are presented with." - A character in The Truman Show, when asked why he thinks it took so long for Truman to start questioning his life
People that claim to support capitalism also refuse to actually follow through with its ideology. Under capitalism, the only thing you should care about is getting more money and things. It doesn't matter who you have to harm or kill to accomplish that. Oddly enough, the capitalist masses refuse to do something like seize the means of production, unionize, shoplift, or even support nationalizing necessary industries such as healthcare or support piracy because it takes money away from people who "earned" it. Capitalism doesn't care who earned what, it wants everything.