I wonder though whether this optimization hasn't created a brittleness in operations, where shocks due to security lapses or outsourced provider probls become unrecoverable.
One thing I definitely wouldn't run if I could help it would be email, going O365 or gsuite saves a ton of effort that doesn't contribute to the bottom line and has significant security advantages. But 'everything azure' or 'everything aws' has its own challenges.
While that makes a lot of sense will it remain a requirement if/when it's simply not a choice with any major vendor?
Can smaller vendors still provide that choice and meet all the necessary certificates that such industries often also require?
(Serious question, not trolling.)
I am reasonably confident that RedHat will continue to cover this ~forever, if it comes to that.
Oh, you want to properly administrate your Windows? You can't unless you buy another Windows! But a more expensive one!
You are unable to wade through our byzantine licensing maze? Buy another Windows to manage that!
Expensive Microsoft solutions for problems created by Microsoft. And then there's this entire army of sods that think this is the best thing since sliced bread, telling you "Isn't it fantastic that Microsoft provides this wonderful solution?"