Thought I'd share the data point to support jetbrains
https://www.jetbrains.com/idea/download/other/#releases-2012
But if you have the receipt, email the company and ask for help obtaining an old version. They are very willing to help customers, both current and previous.
If I stop paying, I have the perpetual licence for the version at which I last paid so the "I WaNt tO owN mY SoFTWArE" crowd (which I am a part of) can choose to only pay when their current version starts lacking modern features. That's the reality of anything that you buy.
My experience is the software development landscape evolves so frequently that a yearly refresh of modern convenience features makes it a no brainer for a professional. I love to tinker, but between family and career, if I do happen to have a few hours to code I don't want to spend any of that time debugging my custom IDE. I used to, I respect those that do, but that's just not how I want to spend my time.
Plus, I am very happy to support developers and I encourage others to as well. Esp when the company isn't "branching out to sell user data, advertising."