You mean "feel lonely at the same rate" or that they are actually alone at the same rate? Men do have fewer friends and its much more common for men to have no close friends at all.
The free market rate of a young/fit woman's sexual services are several hundred or even thousand+ $/hr. I suspect any man who is seen as potentially offering 100s of $/hr in services if you pretend to be a friend long enough, would see similar interest of fake friends.
I could see it making you even more lonely, to have to filter through that though, as a man is probably less likely to reject someone as a 'false positive' who might be a true friend through such filtering process. If you are down and out man and someone is being nice to you and not trying to sell you something, I've found it pretty rare that the person isn't being genuinely friendly. I've heard the exact opposite from females.