What do developers / creators of programming languages ​​earn?

Question

Monetization

Do people who have made their own programming language just use it at work, or do they earn money too?
I understand that they can receive money from donations, but are there other sources?

Answer 1

They don't earn. Almost all languages ​​in the world are open source, developed either by the community or by NGOs owned by large organizations. For example, Java is being developed by a separate company, a subsidiary of Oracle. Go is Google. Quite often, the language appeared as a necessary tool, and then it was simply brought to the masses.

Answer 2

Jonathan Blow (creator of Braid and Witness) writes the game in his own language. Earn money from games.