In case you don't know, Crowdstrike is hardly the only company with large scale access to this many companies,governments and resources. It takes one rogue employee to deploy a disk wiper that destroys every computer (including linux and macos) and affected systems won't recover at all. it would be months before critical systems are back online, the global economy would come to a halt worse than how it did with COVID in such a scenario.
It isn't "why didn't Crowdstrike do better" (although they should have), it is more, why isn't technology in critical systems more resilient to one vendor screwing up or getting hacked?
For example, let's say it wasn't just a boot loop but a disk wiper erased every boot disk, is there any reason pxe booting a recovery image or a backup image configured already on servers, atms, kiosks, point of sale systems,etc...? even if UEFI and bios were erased, it is technically not impossible to have an auto-recovery mechanism implemented right?
If you have never been in an incident response (IT and security incidents) root cause analysis, I don't blame you for not thinking deeper about the root cause, but that is the type of root cause analysis that has been missing despite over a decade of rampant ransomware, disk wipers, and supply chain risks.
Finding someone to blame and be angry at is easy and doesn't solve the root cause. Making hard technical decisions and not wasting this opportunity (never waste a good crisis) to push for resilient technology investments actually solves the root cause behind this and other repeating problems.