A better model is certification. Make the rules public, and when you want to sell your product, you must pay a standards agency to put their logo on your product.
You have to do that too. Well, you can never use their (the ISO) logo but you can use the logos provided by the certifying company to "prove" that you are certified. People don't abuse those logos because the companies in question have a lot of lawyers and will litigate relentlessly.
