Being one of these women that you speak of, I feel I have the right to chime in a bit here.
First off, I don't see how using your appearance to make a living makes it any less legit than anyone else. A singer uses his voice, a scientist uses his brain, an athlete uses his body and an actress or supermodel uses their appearance as well. We ALL use some part of our body to make a living, and using our attractiveness isn't any less commendable than the rest.
And secondly, your post has an implication that women who are hot don't have to actually "work" to get paid lots of money. Obviously you're on the other end of the computer/tv screen enjoying what we do, but believe me, there is ALOT of work that goes into it. Its not just about getting fucked in front of a video camera, or in my case, turning on a webcam to perform. I don't know about other girls, but I can say for myself that I spend about 14-18 hours a day working. When I'm not on cam (8-10hrs a day), I'm emailing, shooting content, tweeting, conversing with clients/fans, etc etc...I work damn hard (and no, I don't get paid shitloads of money for it either). There is ALOT that goes into this job and business other than just sitting around and looking pretty. I deal with assholes on a daily basis. I get rude, aggressive emails any time I change up my appearance, even in the slightest way. I suffer from carpal tunnel syndrome from all of the time I spend on the computer (it really IS just like any other office job), and I've sacrificed having friends or family be close to me because of what I do. I'm sure the same can be said about alot of girls in the industry. Its NOT easy work. I wrote a blog post last year regarding "the camgirl life", and I"ll post it here for anyone who wants to read it. I made it after an asshat came into my room and started running his mouth about how I'm an easy whore, who is too lazy to have a "real job" (obviously spoke before reading my profile or blog to find out I actually DO have a day job lol) and I felt that it was important for guys to kinda see things from the other side of the camera.
http://spexyashleigh.com/04/12/248/the-camgirl-life/
But yeah, I mean women MIGHT have an advantage and special opportunity if they're attractive - after all, the average joe wouldn't be offered this career choice if they weren't "up to par" as far as appearance goes...but then again, I don't have the option of being a football player, or construction worker either because I lack in physical strength...but you won't see me whining on a football forum about life being unfair that I wasn't born strong or athletic...