They are seen as being the top-notch best of the best companies around, equipped with unlimited resources and endless cash to keep their stuff protected, detecting/blocking such issues in advance and preventing these kinds of things from happening in the first place.

Of course the "Fortune 500" usually also means that they are so big that they are divided into multiple completely separated departments/units, each with their own tools, practices and processes.

These issues have exploded especially since the dawn of DevOps. Devs have been developing with tight "agile" deadlines, the Ops part has been barely done as the admins were told they were no longer needed and they pivoted to "Cloud Architects" or such, and doing Ops is not "delivering" anything, so you don't get rewarded for fixing reliability issues unless they are visible to end users.

Just when organizations started to realize this doesn't fly in the long run and started to take back control with stuff like Platform Engineering, the Devs got equipped with tools that have even bigger blast radiuses and started running around with huge LLM-scissors and AI-agents with unlimited permissions, vibing stuff into production even faster, cheered and supported by the hyped up upper management sipping more KooLLM-AId.

Now that the water level is starting to rapidly drop, we get to see which organizations have been swimming naked.