From what angle do u say this Mumbai gives 80k cr's as taxes to central govt.it only gets around few hundred crores from the center rest all goes for other states (including Maharashatra). If the Center gives some funds to Mumbai then it can become like shangai or Newyork.
Even forigners prefer investing in Mumbai bcos this city never sleeps & still safe for women at any time.
Look Karnataka govt banned working of women in night shift.