The liberalism that is practiced in the US is neoliberalism, the same thing practiced throughout the developed world, and we don't see ideological movements in power specifically because business interests have historically intervened to overthrow those governments in order to install friendlier regimes that let them plunder natural resources.
But then neoliberalism ultimately favors property rights over human rights, and as Marx observes in Das Kapital the owner class will influence the courts to favor property and business over the public good. It'll also hack law to gain influence over the government to deregulate and protect the power of the wealthiest plutocrats and companies.
Democracies and leninist economies have existed. They just get put down before they have much of a chance to flourish. Even Wilson favored monarchists over communists.
In the US, we can't imagine anything other than capitalism because of over a century of propaganda inserted into our primary schooling. That campaign has only gotten more and more conservative and now MAGA ideology is taught in class. This was deliberate, as the US education system was always regarded as an instrument of control and worker indoctrination.