A lot more then that.. there's also a few hundred thousand Shopify stores that were affected as well to include my company's store. Generally directly interfearing with commerce is a big no no as well.
They could also use a private team speak / ventrilo / etc. server but I would hazard a guess that most of it is done via throw away cell phones.. so let's take away Mobil phones from everyone? Really this whole speiel sounds a lot like the whole " gateway drug" dispute.
Personally I would have to think that the issue is that there aren't enough insiders that actually use webcams to complain about the issue before it is released. I am an insider, I HAVE a webcam, but I haven't used it in about 2 years. Our business just tends to use voice much more than video.