The reason for that is simply that most of the time people aren't just making claims, they're referencing claims - just like I have. The arguments and evidence

The reason for that is simply that most of the time people aren't just making claims, they're referencing claims - just like I have. The arguments and evidence you think my comment is missing, isn't actually missing it's just implied. The claims I made specifically are essentially just repeating what Adam Smith wrote in The Wealth of Nations in the 18th century. This is fairly basic economics. Also not sure what the curriculum in the US (or elsewhere) is like but I learned about this in high school (well, at a Gymnasium which is supposed to be more advanced but still). I wouldn't bother to provide arguments, evidence or any kind of proofs in a discussion involving high school mathematics either.