You don't have to depend on the company either - don't use them and/or don't share personal information.
First of all, by saying this you're admitting that giving away your real name to a stalker is a bad idea -- which you obviously should. Because it is a terrible idea. Facebook's real name policy
really does help stalkers and make it easier for them to harass and threaten their victims, and in the most extreme cases track them down and physically abuse them. Now, you're saying that there's nothing wrong with e.g. Playstation forcing people to use their real names, because we can simply not use them. But as more and more companies -- Facebook, Google, Microsoft being the biggest, but Playstation and surely others will follow suit -- force people to use their real names, this problem will only get worse and worse. A "determined asshat" won't have to do much "hard digging" to find out where you live. This is the first problem.
The second problem is that a girl shouldn't have to choose between playing computer games and
not being stalked. Nobody should. Alps shouldn't, aimee shouldn't, my two friends who were stalked and harassed shouldn't. Nobody should have to choose between using public transport and
not getting molested. Nobody should have to choose between going to school and
not getting shot by the taliban. Forcing people to choose between giving the asshat who is stalking you your real name, and playing Call of Duty, is a totally s***ty choice to force on someone.
Yeah, sure, some people are going to think, "oh, crap, if I use my real name then I might get charged for stalking by the police!" and decide not to do it. But as Facebook shows there are loads and loads of stalkers who aren't put off by that at all. And in those cases, the stalking is made 100x worse by the fact that the stalker knows your real name and your real identity. The stalker turns from a disgusting nuisance into a threat to the victim's physical safety.
Your name isn't that divulging since if that is all you are going to share, people are going to have to dig hard or hack to get more than just that. Not sharing your name doesn't throw up much more of a barrier to a determined asshat who is going to stalk you. It isn't facebook's fault if you choose to share more info than your name with random people.
If by "dig harder" you mean "use the phone book" or "do a quick google" then... yeah, alright, you win this one...
"Determined asshat"? You do realise that stalkers aren't just uber haxx0rz who dox people for fun, right? The "determined asshat" who stalked my friend was just some loser who had a facebook account and too much spare time. He messaged her with disgusting messages, and harassed friends for more info. As it was, he went away after several years, without doing anything in real life. But it could have been so much worse. You seem to live in this world where stalkers are evil supervillian masterminds who can, with nothing more than the nickname Hobbsyoyo, hack into your TV and remotely install a webcam on it to record you masturbating in the shower through night-vision that sees through walls. But more often, they're just people who send disgusting messages like the horrible ones aimee received, that make women fear for their personal physical safety. Now, you can tell those women that they have nothing to fear, that their names aren't really divulging much information, or that it's their own fault if they become the victims of stalking just because they "put too much of themselves out there". But that just makes you an apologist.
I seriously don't know how to get through to you that giving a stalker your real name is a
really bad idea. It should be obvious on the face of it...