"Collaboration" is a poor model for hard R&D. Some problem domains, like video coding, require PhDs with extensive domain knowledge. These folks don't work for free. Community projects don't have the resources to pay for systematic, concerted research efforts in these areas.
Which is why entities like MPEG-LA exist in the first place. If collaborative projects had developed these technologies first, the companies behind MPEG-LA never would've gotten their patents.
> Instead, some like MPEG-LA are doing concerted effort to extort money and prevent competing technologies from emerging.
Note that the key competitors to the patented MPEG technology is coming from "benevolent monopolies" like Google. Those alternatives are unsustainable without those sponsors. So in reality, "open collaboration" is not one of the options. It's a choice between R&D bankrolled by patents, or R&D bankrolled by Google's search profits or Facebook's social media profits.