Earlier quoted context omitted.
Same here for Adobe Creative Suite; still on version 6 (perpetual license), which I run in a Virtual Machine due to support end-of-life.
Intuit Quickooks is same way. Hasn’t substantively changed in 20 years but they stop you from importing new data if you don’t update to latest every 3 years. They need some real competition.
Have you tried Xero? I haven’t, but if you have, I’d be curious to hear your take on it.