You’re basically asking for legal council. The law is precise to a large extent but just as hairy and vague. You’re not getting meaningful answers from a defensive position.
But the short answer is that where is the line depends on jurisdiction, it is often along the lines of what they consider a hobby, a small business, large business, and so on.
But the short answer is that where is the line depends on jurisdiction, it is often along the lines of what they consider a hobby, a small business, large business, and so on.