This is a good point. My wife's company has a team consisting of a lawyer and 3 paralegals whose sole job is to review their marketing offers just to ensure they are in compliance.Every state has different rules.

Smaller company would need a smaller team but even a single salary on the books just to comply is a large expense for a small business. Multiply this by other areas now such as licensing, insurance, etc. Just ensuring your every day work is not breaking the law becomes financially prohibitive.