> another reason I'll be sticking with my FOSS development tools.
Here is the repository for IntelliJ [1]. It has an Apache 2.0 license. That is - by any definition - FOSS.
It’s clear you have some form of agenda with “political reasons” mentioned. Why not stop being coy and spell it out?
[1]: https://github.com/JetBrains/intellij-community