> advertisements like this are much more common than advertisements with buff men that are supposed to make men feel more sexy.

Maybe women are just a larger market. I can't comment.

> I think many people would agree that, at least in American culture, there's more pressure on women to be sexy than there is on men.

Again, maybe the causation is the other way. I can't comment.

> I'm not aware of such a thing with men (certainly not with the same prevalence).

I'll give you that. This is, again, probably addressing the fact that the target market are men.

> stripping and prostitution are at least perceived (and portrayed in media) as predominantly female industries with male clientele. The concept of the woman as a sex object is practically everywhere.

I'm not sure this follows. They're perceived as predominantly female because men are more overt about (or more open to) paying for sex. Women aren't as interested in that, for whatever reason. Male strippers/prostitutes do exist, after all.

This isssue is too complicated to discuss on HN, sadly. I did greatly enjoy the discussion, however!