It's right there in the article. He's requesting that the government grant to YC: 1) An allotment of visas. 2) Control over the allocation of those visas ...

It's right there in the article. He's requesting that the government grant to YC: 1) An allotment of visas. 2) Control over the allocation of those visas ... possibly to be extended to other venture capital firms (nobody else, of course, and certainly nobody self-funding a company with capital equivalent to that which YC provides). He's happy for YC to be the only beta tester for now, though.