I have no problem with people making money, but crazy claims and unbelievable profit margins exist in this arena
"Unbelievable profit margins" does not make me think of the audio industry. Land development, automotive manufacturing, filmmaking, computer software or site development, defense manufacturing, energy exploration and transport (oil and gas), are some industries where "unbelievable profit margins" are possible but, for the most part, not audio. "Crazy claims" you can find pretty much anywhere.