Most of the big firms (Tata, CTS, CapGemini) have big offices or call centers, with VPNs or private connections to western infrastructure -- otherwise you would have random Indian IPs logging into your systems, and that would make my security team lose their minds.
But with COVID they can't congregate in those offices, and the logistics of getting additional VPNs, working around geo-fencing, and the fact that some of the admins don't have internet at home means they're not able to support anything.
The handful of Filipino and Mexican offshore talent has been more successful in that regard. Mexican talent in particular has been pretty good -- more expensive than Indian hires, but generally more qualified with overlap of US timezones.