If you had offered them 250K/yr would they have taken the job? I think so. If you had just upped your offer they would have taken the job. Again for the 1 millionth time there is a price point for every job and position and it is time to shut the cookie jar. Take the H-1B quotas down to zero so leaches like you can go out of business or hire Americans, Go America, go Trump, and piss on the un American POS that infest the USA.
Again India has the supply. IT shops have the demand.
Do you want congress to repeal the law of supply and demand?