I thought the idea of Startup School was to "sell" YC to founders there, along with the implicit idea of moving to SV. Seems like a stronger case for India than a lot of other places (great founders, but fucked up environment, so they have the most relative advantage to moving, especially if they can keep enough connections to India to continue to recruit for remote or relo.)
I don't know what Sama's plan is but it doesn't scale very well. If you plan to fund thousands of promising startups, I don't know if you would want to bring them all to the US. The biggest reason for that for the first few years startups succeed more in one geographical region (as in one industry industry segment and one customer profile) and asking them to move might not be the best of idea. It will work for some but will destroy some other promising companies.