In the last couple of centuries, lots of Chinese men traveled abroad to find work, many in the western US. More recently men from all over the globe have come to the US for work as well. These men are often supporting families back home, but being unattached makes it even easier to travel abroad to find work in a richer nation than the one you're leaving. I'd expect that trend to continue: the men in these countries that have a too few women will travel to countries where there aren't enough young people to do all of the work that needs doing.

They still won't have wives (unless they like much older women), but they'll have money, and that will give them the resources they need to find companionship. (eg: traveling someplace with a surplus of women, competing with poorer men for the attention of women, paying for prostitution, etc.)