I don't know what country you're in. I'm in America, and that's what I was basing my comment on, which is also what the original post was discussing.
Maybe things are different in your country and daycare overhead is nonexistent. I don't know.
In any case, your disbelief doesn't make my statement untrue. If you want to dispute what I'm saying, you're going to need to back up your claims with some kind of evidence rather than just responding with "nuh-uh."