The reason why ARX is not on every shelf, of every parts store, is really so very obvious. Most people have never even heard of ARX, and low consumer demand means chain stores wont carry it. Corporate chain stores, care only about potential sales, based upon consumer demand. They don't care if it is any good or not. They wouldn't sell snake oil if they cared about that. If it can't be proved, that what they sold you damaged your engine, then they are at no risk of liability, and they definitely will sell it as long as it makes them money.
Those who buy snake oil, most certainly would buy ARX, if they knew about it and they could buy it in stores. They are obviously willing, to try anything, as long as it is advertised and sold in stores. They are without a doubt, the biggest potential market, and they are also the least difficult to convince. So maybe it is time to stop focusing solely on those who are the hardest to convince. That has been done enough now. Word continues to spread, among real car people and professional mechanics, and so the groundwork has been done.
It is time for the next step.
Stop this myth COLD right now. ARX is NOT "just too hard for average people" to use. That is nothing but unconscious hubris, and even if that were true, then do what BIG PHARMA does. They advertise drugs that must be prescribed by a doctor, so people will ask their doctors to prescribe it for them. Get people to ask their mechanics to use ARX, and convince their mechanics to try it. As I have already said, the groundwork there, is done already.
Don't underestimate how many do it yourselfers there are. BITOG is only one small part of that world.
Don't forget the kids who spend lots of time and money, doing wildly stupid and even dangerous things to their cars, just to stand out from the crowd. Make ARX look cool and they will buy it and use it. In fact they will pay twice as much as it costs now for it.
Why does snake oil keep on selling despite all the good evidence against it? The answer is simple. It is advertised on TV and in magazines, and it is sold in big corporate chain auto parts stores. It has to be good. What harm could it do? What could go wrong? They sell it in all the auto parts stores!