This is a very objective discussion. We do not generally provide legal advice on what is considered to be a high risk or low risk industry and clients will need to understand themselves who their end users generally are and whether or not they can be considered to be a low, medium or high risk.
Generally, at merchant’s side, to be able to determine the overall risk they would need to do a risk assessment taking into account the product they sell, the regions they sell it into and how they sell the actual product/service.