My former company (AeroFS) was one of the few I'm aware of that was willing to hire good talent even if it required a visa.
Also, I think that asking someone from India (taking that country as an example) to move to the US for less than market wage to toss the dice on a startup is... a challenge. That startup is less marketable on their resume than BigCorp if they want to return to India and get hired by another company or join an outsourcing company.
My former company (AeroFS) was one of the few I'm aware of that was willing to hire good talent even if it required a visa.
Also, I think that asking someone from India (taking that country as an example) to move to the US for less than market wage to toss the dice on a startup is... a challenge. That startup is less marketable on their resume than BigCorp if they want to return to India and get hired by another company or join an outsourcing company.