Hehe - disposable razors (with the removable head) are also a kind of subscription. Good piece. So many things are hidden subscriptions these days, even when they don’t have a need to be. It’s so obviously a money grab.
Even the older double-edged safety razors were designed around such a model, but at least there is a 'standard' for those, with plenty of different companies producing interoperable consumables. Would it be fair to say that any product with consumables that are proprietary to the vendor, is a subscription?
It isnt quite as easy, and I still cut myself from time to time but I also am still using the variety pack of 100 blades that I bought two years ago for like 10$.