You simply cannot guarantee a profit from playing dice at Bustadice. In the long term it is statistically impossible to overcome the house edge and use a casino game like this as a revenue stream. If it were possible, why would Daniel even keep this site going? Bustadice is not a charity.
If you really want people to trust your system, you'll have to prove that you are profitable after an arbitrary # of dice rolls, like ~10,000,000 rolls. Setting a profit goal is not a reliable metric at all.
I wholeheartedly agree with you. There is a reason on why gambling websites (in general) have house edges- at the end of the day, they are still business whose goal is to earn money and profit.
Like what you mentioned, statistically, it is near impossible to profit from a streak of gambling activities. With the house edge being present, the more you bet, the more chances that it will impact the edge against you. That is why, gambling is a game of risk in which it is essential that you only bet just for the thrill of it or due to the fact that you just want to test your luck out.