Ocasio-Cortez is speaking against anarco-capitalist-corporatism, not all capitalism

“Capitalism is an ideology of capital –- the most important thing is the concentration of capital and to seek and maximize profit,” Ocasio-Cortez said. And that comes at any cost to people and to the environment, she said, “so to me capitalism is irredeemable.”

Though she said she doesn’t think all parts of capitalism should be abandoned, “we’re reckoning with the consequences of putting profit above everything else in society. And what that means is people can’t afford to live. For me, it’s a question of priorities and right now I don’t think our model is sustainable.”

Instead of conservative politicians scaring people that socialism means the government is going to take over their business, “we should be scared right now because corporations have taken over our government,” she said. [Source]

What's call pure capitalism is irredeemable. Pure capitalism is unbridled, unregulated, the game of total monopoly played out in real life. Pure capitalism would result in the most unscrupulous person amassing a fortune such that everyone else would be literally owned by that one person. There would be no freedom as we think of it.

Pure socialism is zero private ownership, only collective ownership completely and purely democratically controlled.

Ocasio-Cortez is pushing for something between those two polar opposites: How much private versus how much public, how much non- or anti-democracy versus how much democracy?

She's trying to find where to place the fulcrum for the best balance.

She deserves a hearing. She is speaking for hundreds of millions, even billions, over many, many centuries, perhaps millennia. She is standing on the shoulders of giants.