[WeAddValue]

Not only one throat to choke, but most C-Suite had direct or indirect experience with what the old IBM (not sure about the current IBM) could do in those infrequent situations with high-impact, high-visibility, nasty technical problems. IBM had a well-defined process in place to handle these when they occurred. If the local team couldn't fix it, they could declare a "critsit" (critical situation) that launched a process that allowed them to pull in amazing resources and bypass red tape.

In one that I had direct experience in, they flew in one of the software's developers to do onsite troubleshooting. Also, being the hegemon of the tech world, IBM often would take the end-to-end role and not just stop at their boundary of a tech problem. I was involved in one in the late 1990's where we were running Netscape's iPlanet web server on an IBM JVM (on IBM's AIX) and it had a nasty memory leak in production where volumes were higher. We called Netscape and got what felt like a guy with a pager on the beach (it was outside business hours when we called); not helpful at all. We called IBM and things started to rock & roll. Eventually we had someone from their UK lab tracing the JVM until he found a JNI (Java Native Interface) call from external C-code (which would have been iPlanet's code) that had the wrong value for the flag that indicated who (JVM or C-code) should release the memory. He could have stopped there saying "not IBM's fault" but he just kept going reverse compiling the C-code to find the bad call. We were able to get back to Netscape saying in module yadayada.c, somewhere around line 47, there's a JNI call with flag=0, change it to flag=1. The patch from Netscape fixed the problem.

These infrequent critsits are something the C-suite remember for a very long time. They know that no way in hell their own staff could resolve these situations, especially in the days before the web, Stackoverflow, shared-knowledge, etc. If not for IBM squashing the bug, their bacon would be fried giving unsatisfactory explanations to their CEO.