> It seems the open-source experiment has failed

People have been saying this since the 80s. Reality is that without open source, this industry would be tiny compared to what it is. So many times open source has enabled an entire sub industry (i.e. ISPs in the 90s, Database, SaaS in the 2010s, now AI). And most of it is someone solving a problem that was worth solving for their own use, and for whatever reason made no sense to commercialize by selling licenses.

> on the backs of ten thousands of now-burnt-out maintainers.

Money isn't the motivation for most "free" open source. If it was, the authors would release as commercial software and maybe as "source available". That someone can use open source to build businesses has been the engine for the entire industry. In other words, the thought that maintainers quitting maintaining is some problem that can be fixed if we only paid them is non-sequitur. A lot of it is that people age out, get bored with their project, or simply want to do something else. Not accepting money for maintaining open source is a good way to ensure it stays something you can walk away from and something where the people attached to the money have zero leverage.

I do think that a lot of maintainers struggle with pushy and sometimes nasty people that take the fun out of what is a "labor of love."

> exploiting entities have never shared substantial or equitable profits back.

If I want to make money, I sell commercial software, SaaS or PaaS.

> they must compensate the creators proportional to the library's footprint in their codebase and/or its execution during daily operations

One of the more interesting uses of open source is to level the playing field. For example, there was a time when database was silly expensive. Several open source products emerged that never would have been viable commercially without the long term promise of "free" and the assurance of having source code. To have a license with a cost bomb on it would just ensure that people would use another choice.