I talked to a friend of mine who did her university project research on prostitution in South East Asia.
A lot of prostitutes go into prostitution because of economic hardship. Sad to say, some families sell their daughters because of economic hardship.
When money is hard to come by, crime does abound. Not just prostitution, gangs, robbery, burglary. If people have nothing to do, they may vent their frustration in whatever methods necessary. Idle hands do make the devil's tools.
So I think that doing honest business, seeking to bless others economically, to prosper abundantly is good and even necessary.