Scammers, as a category, target everyone. You think Indians don't get conned into sharing their OTP/passwords or financial details?
> They are too short-sighted to not see that the "industry" is damaging India's global reputation
India has one of the lowest police officers to population ratios in the world. They are so swamped with day-to-day crimes and other nonsense and providing protection to events and politicians that India's "global reputation" is simply not on their radar.
You cannot buy a SIM for your phone or open a bank account without providing ten types of identity documents but these scammers seem to have an infinite supply of phone numbers and bank accounts. That is just the way things are.