I think the bigger issue is they are all entirely operated out of india.
Why is that specifically a problem, exactly?
There are many reasons why it is *easier* to setup a scam call center in India, but it's not like the Indian authorities completely ignore the problem. One operation in India was just raided and shut down after some of Jim Browning's work was picked up by the BBC.
The VoIP gateways allowing CID spoofing isn't an India specific thing. Neither is companies like Paypal who will continue to process payments for an account even after being provided evidence of fraudulent activity, and REFUNDING people who manage to file complaints on that same account.