Since the main selling point of games like DMC and MGS is not fanservice, it's not fair to mix them with DOA which makes everyone think of bouncy boobs first.
Game industry is run by corporations these days, and the audience they cater to is no longer made of just hardcore gamers, but also of people looking for entertainment. And fact is, folks like looking at pretty people. They like to think about these pretty people beyond the game, create fanart and fanfiction, thus expanding its fame and raking the company more profit. Granted, a pretty face on its own won't take it far, but do you think so many people would keep asking for more without it?
Game industry is run by corporations these days, and the audience they cater to is no longer made of just hardcore gamers, but also of people looking for entertainment. And fact is, folks like looking at pretty people. They like to think about these pretty people beyond the game, create fanart and fanfiction, thus expanding its fame and raking the company more profit. Granted, a pretty face on its own won't take it far, but do you think so many people would keep asking for more without it?