> Otherwise, it will always seem expensive, because you can multiply an arbitrary period of time to the price.
I would frame that the other way—it seems expensive because it is expensive, if you look at the long-term cost. And if you don’t look at the long-term cost, you’re fooling yourself.
You’re right that choosing one year as the time unit is arbitrary, but I actually think it’s an overly-generous choice, because as I mentioned, when I buy non-subscription software I almost always expect to use it for longer than a single year.
I’m increasingly viewing subscriptions as a cheap ploy to trick consumers into paying more. “Oh, that iPhone doesn’t cost hundreds of dollars, it’s just $20 a month for two years. You can pay $20, right?” What bothers me most about the scheme is it appears to be shockingly effective. This is literally grade-school arithmetic!