[sph]

Sorry but the linked article shows the exact opposite phenomenon: when parents had to pay a late-arrival fee, the number of late parents noticeably increased.

In open source the free-loaders are the entitled ones, expecting maintainers to move mountains to accomodate them.

In fact, I am led to believe that they superficially look the same, but are very different phenomenons with very different results. I feel that the open source maintainer burnout is not driven by price, but by sheer scale of reaching so many "customers" worldwide of any type, which includes nasty people. If 1% of people are narcissists, and your modest library on GitHub is used by 100,000 people, you'll have to deal with 1,000 potential entitled idiots, which is very stressful for a non-paid volunteer job. I bet that if your library was sold for a nominal price, as your link shows, you'd get even more entitled users. The fact is that not many paid products reach as many users as any average open source project. Most of the world is much poorer than the Western countries, and their only choice often is open source.