The people taking videos of their kids won't be doing H.264. Their videocams and/or their Youtubes will be doing the encoding, and their browsers will be doing the decoding. In both cases, larger organizations which are easier to bill.
Your videocamera's license for H.264, if you actually read it, is likely quite restrictive. If you use it to film a video, post the video on youtube, and get any revenue from the ads on the resulting youtube page, you're in violation of the license terms, for example, for every single video camera I've seen.
