For me best and fairest gambling site are those site which is running for years already.
There site are still up for years because users are already trust the website.
I must say that there are many factors by which you can evaluate the casino and not just over the period of time. The site may be active but does not contain players and games are not good. In addition, it is the players who determine their site rating and not the site owner
But surely the period of time would also be one of the factors because they couldn't really hold on or made it that long if they aren't trusted and doesn't have enough players.
Surely people would just leave the site if they don't like it so the gambling sites wouldn't really stay up for long if they wouldn't make some profit from it .