And security work is rewarded even less!
While I do recognize that this is a pervasive problem, it seems counter-intuitive to me based on the tendency of the human brain to be risk averse.
It raises an interesting question of "why doesn't the risk of security breaches trigger the emotions associated with risk in those making the decision of how much to invest in security?".
Downstream of that is likely "Can we communicate the security risk story in a way that more appropriately triggers the associated risk emotions?"
What's the risk? The stock price will be back up by next week.
Look at the crowdstrike failure as a recent example, but there's plenty more in the past.
I think it's part of the reason stocks almost always dip after positive earnings reports. No matter how positive it's always less than idealised.
You might think there's a trick where you can sell maintenance as a new thing but you've just invented the unnecessary rewrite.
To answer your question more directly, once something has been achieved it's safe to assume someone else can achieve it also, so the focus turns to the new thing. Why else would we develop hydrogen or neutron bombs when we already had perfectly good fission ones (they got commoditised).
Only now is one of those components, the engine, being changed out. And looking at that from this perspective, it's apparently not as humongous a change as many are now claiming: For one thing, it's just one of the four (or more?) parts of the basic recipe; for another, it's not all that new -- electric motors are in wide use elsewhere, and were one of the alternatives in rather wide use in cars, too, before the industry settled on the current recipe ~a hundred years ago.
Anyway, the "beholden to them alone" bit doesn't seem to apply to the automotive industry, since pretty much all manufacturers are in on the switch-to-electrics idea. Which begs the question: Would there really be so much of a customer lock-in in the aeronautic space either? Just like the idea of driving cars by electric motors is unpatentable, what could Boeing (or anyone else) come up with in the basic design of an aeroplane that isn't too general an idea to be protectable, or (most probably) hasn't been tried before?
It's true in software, it's true in physical infrastructure (read about the sorry state of most dams).
Until we root cause that process I don't see much progress coming from this direction, on the plus side CS principles are making their way into compilers. We're a long way from C.