"under capitalism" is a perfectly correct and usable phrase in written English.
You could use it in a sentence such as "Under capitalism, opportunity abounds for entrepreneurs and businesses to succeed."
"UNDER capitalism", ran the old Soviet-era joke, "man exploits man.
Under capitalism, private capital is invariably held by a minority, so such prosperity must mean a rise in the wealth of the rich.
Under capitalism, "the dull compulsion of economic relations" is the essential disciplinary weapon that capital holds over labour.
Are economic crises inevitable under capitalism?
The farm initially expands under capitalism.
Under capitalism, it will be made bit by bit.
The respective captions read "Under capitalism" and "Under socialism".
Planning was for socialists; under capitalism, the market would figure things out.
For Marx, only under capitalism does Malthus' dilemma of resource limits arise.
Instead, it's revealed itself to be a sneaky condemnation of pretty much every institution under capitalism.
As the title suggests, his work explores how images and desire are produced under capitalism.
