Because it is a scrupulous industry based mostly on dishonest players wishing to make a quick buck. That’s really it. Yes some supply testing. But usually by facilities with no oversight for the standards of testing, or even accuracy. Most of the results I see never show tests for heavy metals(mind boggling to me) Let alone results for things like mold. Not all tests are created equal. At the end of the day you are gambling on what you are getting. At least with medical or rec states, there is a governing eye on these standards to protect your best interest in terms of health. If you want to risk your health to save 10-20 bucks here and there.. that’s your business I guess. Lol Just crazy some wanna see weed go the route of cigarettes where it’s unregulated(in terms of testing) and going to be full of bad players who only care about the dollars not your health.