There are tens of thousands of those companies out there, they get less attention (on a per company basis) than the billion $ ones for obvious reasons, and occasionally stories about them are posted on HN, where they not infrequently rise to the top.
And everyone out there is about becoming a billion $ or more company... What happened to normal ideas, ideas that can literally feed a few families and make you have a good life as well...
Person behind the article seems to enjoy himself and also seems to be feeding a few farms as well that provide him with onions. Amazing work!