[gull]

> it doesn't really make sense to incorporate in US if then I will run the company from abroad its entire lifetime.

What made you think that?

> Is it possible to avoid incorporating in US if accepted in YC?

No, it's not possible. From http://www.ycombinator.com/apply/

"International founders, please note: if your company is a non-United States entity (corporation, limited liability company, etc.), your participation in YC is conditional on conversion of your foreign company into a United States corporation."

[ccarnino]

I have very low chances of getting a visa to live in usa, since I am a dropout without a college degree. Second, I am living in London, which I enjoy very much.

Thanks anyway to clarifying me that it's mandatory to be a US company. I understand why YC needs it.