If doing farming differently would certainly net more, they would do it. So I take there is some component that is forgotten. Be it scaling, labour input or available market for higher priced products.
https://agendagotsch.com/en/large-scale-syntropic-farming-re...
World's most important sources of calories: https://www.worldatlas.com/articles/most-important-staple-fo...
Maintaining ones own - or community - garden is a fantastic way to just improve the quality of your own life, and the life of others around you.
That's a different kind of profit.
They probably don't see farming as being like capitalism because farming is, with some exceptions, mostly socialist in nature – the workers own the means of production.
> They will aim to make as much profit with resources they have available.
That is certainly true, although not a feature of capitalism. Wanting something in return for offering something to another transcends capital ownership structures.