langurmonkey: Putting money into something without looking at data first is retarded. You can't just invest with your beliefs unless you enjoy losing money. I doubt these people are that retarded. So the fact that so many of these big budget games are used in tropes VS women = majority of gamers, straight males.
Looking into incomplete data is also retarded. Looking at data without a proper analysis of said data is retarded as well. Assuming that because something follows a trend, the trend is true is also retarded.
For more than 3 decades, game companies have copied successful concepts, because those were the ones that were selling. Once mario came, mario clones came aplenty. Same for Doom, Diablo, Street Fighter, DOTA, Counter Strike and so on. Games with different concepts will usually not sell well.. See Sacrifice, Psychonauts, Chaos Overlords, Mirror's Edge.
A few times (and it is few), the new concept will be a hit. Recent example, Minecraft. Once it becomes commercially successful, imitators/copycats appear.
So, you have concept A of a saturated market, which has an 80% projection of raking in twice its budget, and you have concept B in a new market, which has a 10% projection of raking in 20 times its budget. Which one will you fund, the low-risk safe investment or the high risk high reward one?
As for the part that the majority is straight males, why can't straight males enjoy other kind of games? What if I like sport games, gambling games, farming games, deep strategy games, or racing over pedestrians? All of those are valid choices for the straight male, and quite nice choices for the other groups. Yet still, the game types that are developed are few. Why?
I'm not going to call the publishers retarded. I'm going to say that they prefer a safe investment over a risky one.