"people that aren't capitalists shouldn't use capitalist products and services" is the same mindset behind capitalism in the first place. the rich get to lay claim to everything, control who gets access to those resources, and then say "well i gave you everything you have!"
yeah, because you hoarded shit that didn't belong to you in the first place
everyone should have equal access to the land and resources on our planet without needing to get someone else's say so.