I issue with subscriptions and pay later schemes is, that you loose sight of what you have paid, will pay next weeks/ months and what amount of money you still have left.
Taking inflation into account for anything that is below 100k and over more than 5 years, is just ridiculous, to say it in plain words, sry.
In short you live day to day with your money without any planning if you let your cash flow out by itself (subscriptions, loans)
OpenAI started as open as well. Sadly