Your money is safe, as it is completely unprovable, I doubt any prossie with still be a active prossie and be a millionaire, the OP asked how many become millionaires, as a total guess and taking into account all the wg's in the country today I would put the total amount in say ten years time in single figures. Don't forget some might move onto mainstream porn and earn a lot of money that way as well.
Yes but look at all the high profile celebrities who have earned multi millions over the years and you still find them gracing the steps of the bankruptcy courts.
Mike Tyson, Kerry Catona, MC Hammer and others I can't remember.
Was Michael Jackson not in severe financial difficulty prior to his death?
Wealth is how much of your earnings you don't spend and how well your investments perform.