Well, my thoughts are that a lot of the negative attention Anita gets is very much "the community policing itself" as the people who are doing so are pretty much trying to shut down a destructive trouble maker.
To be honest unless Anita can actually prove she's been threatened to this level, I'll flat out say she's a liar, given that she's a self promoter and one of the biggest ways to get attention is to play the whole "female in trouble" card and setting herself up as some kind of victim. What's more if she manufactures some kind of alleged threat, she can make herself seem that much more impressive, and use it to deflect criticisms about why she does things like disable comments on her videos and so on.
Basically if Anita actually had proof it's likely she'd be on the phone with the police, not on twitter. Things like "stalking" and threats are a big deal nowadays. Of course she won't do that because she knows the police will find nothing, or evidence manufactured by her. Furthermore even if they do find something, the police will probably tell her that she needs to stop stirring up trouble on The Internet for her own safety, and at the end of the day that's something she won't do, since the bottom line is all the attention.
Plus let's be honest here, Anita is a big mouth on The Internet who has slotted off a lot of people on social media, and really she knew what response she was going to get, and has been intentionally baiting it. She's not a major celebrity or anything, and isn't exactly swarming with personal security or anything, truth is if someone actually wanted to rape or kill Anita over this stuff, she'd already be a statistic. At the end of the day, she's just not that big a deal, outside a specific group of people (albeit a fairly big one) and is mostly notorious because of the negative effects she could have on things like video games. It's not like she's addressing serious enough social issues where she's going to make the kinds of enemies likely to actually attack her.... of course by pretending she's scared of this due to "convincing threats" she can promote herself as being that important as part of her entire schtick.
I think the odds of big companies taking action in favor of Anita are minimal, she's just not that big, and if you know who she is, you know she's hated by as many, or more, people than seem to agree with her, so doing anything in her name is likely to cost you as many customers as it is to gain you some. Heck, I wouldn't be surprised if a company like Valve has it's employees heavily divided on the whole "Anita question" if they even know who she is in more than a general sense.
At any rate, I'll sort of call it now, though I hope I'm wrong. Eventually when she feels she needs a boost of notoriety Anita is going to stage an attack on herself (perhaps even letting herself be injured, or self-inflicting injuries) or claim to be have been raped by a hater, in a situation that will remain highly debatable, and where no culprit will likely ever be apprehended and/or convicted.
