bansama: Do you know what "otaku" means? The original, Japanese connotation, that is. Not the connotation that self-proclaimed US "otaku" have given it. Here's a hint. It's not a label to be proud of, unless you like people assuming you're totally depraved. Well, PC gaming is viewed as worse than "otaku". And that can only be down to the reputation of eroge.
Basically, eroge have cast a negative light on anything to do with PC games (and those who play them). The immediate reaction of most, when it comes to PC games, is that they are nothing but deviant porn. This is one of the reasons (the whole console cartel theory being the other main one) why the larger (console) game selling stores refuse to sell PC games. For the record, VN's on consoles always have the pornographic content removed. Those on PCs, sometimes have both family and adult versions, but that doesn't matter, the "family" versions may as well not exist.
PC gaming as far as the majority are concerned equals porn "played" by sexual deviants who are likely to abduct and molest young children as a result, regardless of the reality. That, ultimately wouldn't be a problem if stores simply refused to sell games in the VN genre -- easy to spot too, considering they have a whole different ratings body; CERO won't touch them. But no. Every single PC gaming genre is tarnished with the same brush.
Outside of Tokyo and perhaps Osaka, it will be almost impossible to find B&M stores that sell any non-adult/non-eroge PC games - with perhaps the sole exception of PC depot that sells a small handful of Capcom and EA titles. And if you do find a PC game store, it's most likely only going to filled with the pornographic VNs.
Now, I've been in Japan for over a decade and in all that time, I've only ever found *one* store that actually sold non-eroge games (most were naturally imports but they also had a fair amount of localised ones too) but sadly, even they don't do that anymore. They have gone from two entire floors of PC gaming goodness, down to two shelves, hidden in a corner - with the rest only available online.
On a tangentially related note, I'm curious if much of Japan thinks its infamous examples of hentai are as weird as much of much of the West thinks they are.