The trend is towards using cheap H1b labor and of late using even cheaper L1 labor. I know some L1 workers who have come here as an exchange from a big Indian company, they are not paid a proper salary but a $800 allowance every month. They have to pay all their living expenses with that including rent. Therefore they are living 4 in a 2 bedroom apt.
They have to work until 10pm everyday and also be available on the weekends. Basically modern day slavery.
The L1 route is a popular loophole these days because it is a largely unregulated visa in terms of minimum wages and caps.