MPEG's policies on creating standards are basically set up to enable the MPEG-LA and new patent pools like this one to make money, though. They have a policy of not caring about whether the technology is patented or not - there could be a small tweak that'd turn it from patent-infringing to patent-free and they'd ignore it - which means that all the members can and do cram as many of their patents into MPEG standards as they can find excuses for.