I've not encountered this limited download period with software in recent times.
If I buy a game from Steam, I can download it as many times as I want - even the new Baldur's Gate 3, which I hear is over 100GB!
If I buy a game from Epic, I can download it again whenever I want - even if Epic no longer sells the game.
The same applies to games I buy from GOG.
If I buy an e-book from Amazon, I can re-download it whenever I want.
Microsoft makes copies of Visual Studio and related tools available from 2013 onward.
I can download a copy of the latest Windows ISO whenever I want, even from a non-Windows PC.
I can re-download software from JetBrains whenever I want - in fact, they have a tool called Toolbox that handles (re)installation, and you can even download and install all the Jetbrains software you have purchased in one click! They also store your software settings in their cloud with five settings slots so you can even have the desired settings downloaded (say, one slot for PC, one for laptop, etc.). It's the old "like a book" rules too, so there's no installation counter.
So I'd say across all different types of software, including development tools, as well as digital media it's not common to not be able to readily re-download something you've already purchased.