This is the same as what's been happening with entire industries: Build for the critical path. Eliminate redundancies. Eliminate resiliency. Lean staffing. Just-in-time manufacturing. Single-vendor mandates.

In the name of efficiency and profit, we have stripped away all the safeguards that should prevent cascading failures after the first domino falls. Anything that doesn't return profit now, today, every day, must be purged. Because what if that domino never falls? Then you wasted your money! Think how much you can save if you don't need to make backups! (And every dollar saved is a dollar in my pocket!) Etc.

And torben-friis is right: the only solution to this, demonstrably, is regulation. Require multiple vendors for every major component. Require staffing sufficient to cover a third the company being on vacation. Require resilient systems, that can take a single disaster and keep on trucking, because they are the backbone of our economy.