All inadequacies of Serena's current form aside (because, yes, she's not at her best at all), it's still kind of odd that people think she could be beaten easily if "only someone moved her from side to side." Maybe it's not so easy to be in the position where you can move her side to side?
Serena's balls are heavy and if she's having a good serving day, she's using her serve to set up her shots (to speak nothing of putting in aces, service winners, etc.). And if the serve hits the spot, she'll be attacking as soon as the ball is returned, going for one-two punch and/or ending the rally early with a winner. You can't just "go move her side to side" when that's happening because you won't get the chance.
And even if she doesn't end it quickly, a ball as heavy as what she hits isn't so easily redirected.
I think everyone has the memo that she's not the best mover, that longer rallies don't favor her and that making her run is a good strategy. Cornet has talked about it (that is, said she beat her by moving her around), NYT's even had statistical breakdowns showing how much her chance of winning a point goes down if a rally lasts past x balls, etc.....so yeah I think the players are onto it.
They're not going out there and just doing it (hi nike!) because, among other things, it's just not all that easy to do when she isn't misfiring on her serve.
Her opponents up to Giorgi and Goerges weren't quality enough to beat her anyway, and Giorgi and Goerges don't move anyone side to side because they're about finishing points early themselves. So, she's had some luck with the draw. But, really.....if that was all it was, the tour would've savaged her a long time ago.