Completely unnecessary retort. At no point did anyone in this thread state that sorting legos was a major problem of society.
Rather, the GP merely implied that some parents would love to have a robot to sort their kids legos, and that (ironically) even that unimportant "need" is more important than replacing git.
Maybe you're not a parent. To me, this sounds like arguing against the existence of the dishwasher by saying "of all the major problems of society, washing dishes by hand isn't one."
Successfully would be big business, because everyone and everyone and the F1000 uses git. Or at least it could more of a feature than a product, and gets merged into some other VC company, or some Jira feature or etc.
Who really wants cheap lego vacuums? Basement-dwellers who are getting yelled at by their mom? Not a good market.
Let me just state the obvious. Of all the major problems of society, sorting legos isn't one. If you disagree, try emerging from the cellar.