I don't know that I would wholly agree with you on that and this documentary makes the case that it is not so much a conscious choice but frequently a decision forced by government policies advocated by food industry lobbying. The individual is playing with a deck stacked by industry / government.
First, if you watch this documentary they will allege that the government policies advocated by big food industries is literally destroying many old values. For example, they cite that Monsanto corporation was able to patent some plant genes - a first in the history of the world that was supported by a Supreme Court decision. That court decision was authored by Clarence Thomas a former Monsanto lawyer. It gets worse. As we all know plant pollen disperses on the wind so they had one farmer who never used Monsanto seeds, but since all his farming neighbors did that gene got into his crop. Monsanto is able to sue him for patent infringement and - according to the documentary - food corporation lobbying has made it the farmers obligation to prove that he is innocent. They had the case as still pending, but obviously he will be bankrupted by the legal fees even if he wins.
Second, Monsanto has a team of investigators whose job it is to find farmers that are planting seeds with this patented gene that were not purchased from them. So, they find a guy that has a seed cleaning machine from the 1800's that has traditionally processed seed from a farmer's crops to be saved and planted the following year. Not allowed, so they sue him for "inducing" farmers to violate their patent. He's bankrupted by the lawsuit and get access to his list of farmer clients by subpeona of his bank records showing all his check payments.
Finally, I live in an urban area and my many of my neighbors are as least as community oriented as the neighbors I grew up with in the suburbs.