[pca006132]

I would argue that subscription is the only sensible model for browser (if payment is needed). For browsers you do want to keep up to date with security patches as well as new features, that is pretty critical for both usability and security.

For normal software you can buy and use some fixed version without too much issues, for browsers you probably need the updates.

Security-wise maybe something like buying a ESR version may be possible, but it will not be cheap and you may miss the new features when some webpage you visit breaks.