Context matters. You analogy isn't applicable because it removes the context for these response. The boycott of Facebook didn't hit critical mass until the end of last week. These companies are taking preemptive action so they don't receive a similar boycott. That is an explanation that doesn't require coordination.

> That is an explanation that doesn't require coordination.

Yes, and it's a huge stretch. That's good for Yoga, but bad for explanations, and it works just as well for 9/11. The simplest, most plausible explanation: they coordinated. Further weight for that explanation? They've coordinated on similar issues before.