If there was big money to be made undercutting Big Potato, someone would do it. Even my CSA grows potatoes.
Your local CSA is also unlikely to be audited by the FDA unless they tried to go larger than your community.
However even in this case customers, or Big Potato buyers, can simply ally and create a new supplier where they are shareholders.
And yeah, it’s hard to do once, but obviously it’s dramatically harder to do after someone has already done it.
Bundle operating system with CPU.
But, both lost in the end, despite abusing monopoly and government intervention did not really help.
And in any case, no one is arguing conglomerated companies have no vulnerabilities or never lose.
I'm saying they have advantages, which is obviously true by the fact that conglomerated companies tend to dominate their sectors.