One example I'm aware of is JetBrains. For years, they seemed to have a near-monopoly, but now they're in trouble.
https://ghuntley.com/kodak/ — there's no inside information here, but the article is spot on.
https://ghuntley.com/kodak/ — there's no inside information here, but the article is spot on.
The article doesn't mention this at all. It just blindly includes that graph and than muses about the death of Jetbrains for a few paragraphs.