That's not how markets work (and I disagree that it would be reasonable).

Price is usually established based on how much something cost to make (materials, effort, profit), combined with market conditions (abundance/shortage of products, surplus cash/tough economy...).

If you want to continuously extract profit from consistent use of a hammer or vacuum cleaner, somebody else will trivially make a competing product at a lower price with no subscription.

>somebody else will trivially make a competing product at a lower price with no subscription.

And software like photoshop is not trivial to copy so it can survive being priced based off of value provided. There exists competitors that don't have a subscription, but they are not good enough to kill it.