It's annoying that SV tech companies get a bad rap with the H-1B even though that the real people abusing these visas are clearly outsourcing firms like Tata and Infosys.
It's not Tata and Infosys either. Those guys are too big to avoid playing more or less by the rules. The actual people playing games like this are small time bodyshops. It'll be two cousins from Ahmedebad starting a shop in the US and hiring a bunch of locals via their personal network. They then attempt to socially isolate their employees, getting them set up in the local Guju community, so they don't talk to outsid…
They play by the rules, but they still game the system. The skill they require is widely available among US residents, just not at the wage they want to pay; and they can pay less because they can afford a high turnover among their H1B applicants. Furthermore, they don't really care _which_ of their thousands of candidates actually win the H1B lottery, which is another sign that their applicants' skills are not in short supply.