There really is a type of person that genuinely wants to help people make money. Now, what they do to earn that trust is different for all people. I prefer 3rd party verification but then if you've only been doing it a few months, nobody subscribes, or they find out you have a linkedin profile, twitter feed, and facebook page, and think it's unusual so I won't do business with them.
There is no reason to think losing money for people through your advice is what any advisor wants. They want money so that their subscribers or clients keep paying, but since Wall Street is not built to give upside to the individual, most of the profits are made by middlemen underwriting deals. The economic profit is pure if you can find somebody to subscribe, and there's no reason to think if someone does subscribe that you don't want to do well. The motivation for subscription revenue is not to get a few months of fees and have them quit. The motivation is to have subscribers for a number of years and make lots of money for all parties involved in the mutually beneficial relationship. There's no shame either in being one of those providers and as long as everyone's aware of the risks involved it is a fair trade for most people to make to trust in a professional's confidence and opinion.
I will say the luck factor is non-existent after 1 year, so most wait that long to see how you fared against the market during that time.