Most of their IDEs you can use for free for non-commercial purposes and even if you need to buy them; when you compare software development to any other profession our tools are incredibly cheap. You can get all the Jetbrains IDEs for less than 300€. Compare that to a HDL simulator or a 3D CAD application like Autodesk. These easily cost several thousand euros each year.
You can just buy them for one year and keep using the perpetual fallback license. Also, they can fuck right off with their planet incinerating automatic plagiarism chat bots.