The main reason of space x existence is exactly the outcome of the OP point

No, that's not true - and it's sad to read on HN. I'm pretty sure Elon Musk would press ahead disregarding Russian involvement, given the available information.

He would but the government would not be forced to give him a contract and subsidy him. He even had to go to court to sue Air Force for giving important national contracts to Russia: http://www.businessinsider.com/elon-musk-lawsuit-against-the...