Adobe's migration some years back from a fixed license to a software-as-a-service (subscription) model never particularly bothered me, although I know it was a sore point for many photography customers (in particular, and probably more in the company's broader installed base) — and prompted some to move to other products. But I suspect
the company's latest financials make it clear there's no going back. And I gather other software manufacturers may soon be following suit.
For quite a few years I licensed software for an agency of the U.S. Government and we always expected to pay annual fees in order to qualify for bug fixes and product upgrades. They were usually referred to as "software maintenance" in those days, but they weren't conceptually much different from a consumer-grade subscription service.
Since I also managed a number of full-time programmers, it never struck me as odd that a software manufacturer would need to extract some sort of annuity payment to cover its recurring labor costs. I never understood the economics of providing intra-release bug fixes without charge and only requiring payment for major updates.