In the early days of MPEG codec development was difficult, because most computers weren't capable of encoding video, and the field was in its infancy.
However, by the end of '00s computers were fast enough for anybody to do video encoding R&D, and there was a ton of research to build upon. At that point MPEG's role changed from being a pioneer in the field to being an incumbent with a patent minefield, stopping others from moving the field forward.
As long as IP law continues in the same form, the alternative to that is completely closed agreements among major companies that will push their own proprietary formats and aggressively enforce their patents.
The fair world where everyone is free to create a new thing, improve upon the frontier codecs, and get a fair reward for their efforts, is simply a fantasy without patent law reform. In the current geopolitical climate, it's very very unlikely for nations where these developments traditionally happened, such as US and western Europe, to weaken their IP laws.
You can say that, but this discussion is in response to the guy who started MPEG and later shut it down. I don't think he'd say its harsh.
They didn't get people to agree on terms up front, they made the final codec with interlocking patents embedded from hundreds of parties and made no attempt to avoid random outsider's patents and then once it was done tried to come to a licence agreement when every minor patent holder had an effective veto on the resulting pool. That's how you end up with multiple pools plus people who own patents and aren't members of any of the pools. It's ridiculous.
My minor conspiracy theory is that if you did it right, then you'd basically end up with something close to open source codecs as that's the best overall outcome.
Everyone benefits from only putting in freely available ideas. So if you want to gouge people with your patents you need to mess this up and "accidentally" create a patent mess.
The point is, if there had been no incentives to develop codecs, there would have been no MPEG. Other people would have stepped into the void and sometimes did, e.g. RealVideo, but without legal IP protection the codecs would just have been entirely undocumented and heavily obfuscated, relying on tamper-proofed ASICs much faster.
The firewall of patents exist precisely because digital video is a way to shakedown the route media would have to travel to get to the end user.
Codecs are not, "harder than" compilers, yet the field of compilers was blown completely open by GCC. Capital didn't see the market opportunity because there wasn't the same possibility of being a gatekeeper for so much attention and money.
The patents aren't because it is difficult, the patents are there because they can extract money from the revenue streams.
Modern video codecs are harder than compilers. You have to have good ASIC development expertise to do them right, for example, which you don't need for compilers. It's totally feasible for a single company to develop a leading edge compiler whereas you don't see that in video codecs, historically they've been collaborations.
The browsers are an interesting case. Neither Chrome nor Edge are really open source, despite Chromium being so, and they are both funded by advertising and marketing money from huge corporations. Safari is of course closed source. And Firefox is an increasingly tiny runner-up. So I don't know if I'd really count Chromium as a FLOSS success story.
Overall, I don't think FLOSS has had the kind of effect that many activists were going for. What has generally happened is that companies building software have realized that there is a lot of value to be found in treating FLOSS software as a kind of barter agreement between companies, where maybe Microsoft helps improve Linux for the benefit of all, but in turn it gets to use, say, Google's efforts on Chromium, and so on. The fact that other companies then get to mooch off of these big collaborations doesn't really matter compared to getting rid of the hassle of actually setting up explicit agreements with so many others.