The whole industry has moved... you just haven't realized it yet.
Look at the largest players in this market: Apple, Microsoft, Adobe, etc. Look at all of the games studios, including the biggest ones (Blizzard, Epic, etc.).
It's only a matter of when, if they have not moved already. You can always find exceptions of course, just as you can still find a horse-drawn buggy.
And there have been lots of updates to Lightroom, except that they trickle in one or two at a time per update. You might not realize it because they don't come in a pack of 50 features at once.
What many customers like you do not realize, is that customers expect things from software that were *never* expected of software when it was sold in a box on a floppy disk or even CD. You want security updates? New features after release? These were never expected of traditional software. You were lucky to get a patch for a bug fix, once or twice, but certainly not at the frequency they come at now. (And software now is a lot more complicated, so there are more problems.) More frequent updates are never truly free. Someone's gotta get pay the developers. Since the requirements have changed, it's only sensical for business models to change too.