This isn't true.

  each 10 per cent increase in gambling expenditure in NSW results in more than

    4,500 additional assaults
    2,800 additional home break-ins
    1,300 additional break and enter (non-dwelling) offences
    1,400 additional motor vehicle thefts
    2,300 additional stealing from motor vehicle thefts
    3,800 additional fraud offences each year

> Stock market integrity is important because of their function in the economy

Some might argue that people - including gambling addicts, and those impacted by their addiction - might possibly be more important than one of many possible financial mechanisms for free enterprise.