'Tis all very simple.
Indian First Officers would be restricted to routes within India, when they accumulated the requisite flying hours, they would then be available for international flying.
In the meantime, ex-pat First Officers would be recruited, with the required flying hours/experience, to operate international sectors, in the meantime.
Of course, these ex-pat F/O's would be paid a premimum over their Indian counterparts...and the inland revenue authorities in India would thus collect larger tax revenues.
Everybody wins!
