They are more concerned with whether their particular tastes in terms of race, body type, fetish, etc. are met. Second, there's the issue of the extent of the market. The profitability of movies and magazines depends to a great extent on the size of the potential audience. If the audience is too small, high production costs may not be justified.
Women are more likely, for instance, to read erotic stories, while men buy the picture books.
In any case, I know that porn companies recognize a difference in taste and try to exploit it. But my observation is that there seem to be many different companies producing sexual material. And, as I noted earlier, even amateur videos appear on the shelves of adult video stores. If most of them aren't looking for high production quality, then there's not likely to be much. A lot of these videos are made in people's homes where there is already furniture and such, and also the same sets are used repeatedly.