I really hope the recent spate of (completely unacceptable and despicable) harassment we've seen in the gaming community online thanks to Gamergate will give game publishers pause when they create virtual worlds, at the very least in the form of self-protection (blocking/muting) but hopefully moreso in moderation and codes of conduct that can lead to bans.
I am not particularly hopeful.
You can't simulate "real life" without community controls. Real life is full of mechanisms to enforce social contracts. From informal ones (walking away) to formal ones (police). A VR world can have the same components, but they'd come at a cost, and they'll only benefit a small percentage of users (the same reason we police are a public service).
Not sure where that will leave us, but at the very least when VR is in this phase of very limited player agency, players who are harassed will often be literally trapped, lacking free movement or an ability to get away from a virtual attacker. "Just take off your headset" works as a last resort, but if it's the only tool available you'll just end with a vicious cycle of increasingly toxic communities.