It is quite alarming if we need to move away from digital connected tech for electrical grid monitoring and management. What about banks? What about hospitals?

It is quite alarming if we need to move away from digital connected tech for electrical grid monitoring and management. What about banks? What about hospitals? storage facilities? record keeping? These are the core underpinnings of a functioning society. We are already using digital-only systems for these. If these can be disrupted or corrupted, then society will come falling apart quickly. If we truly cannot secure a digital system for electrical grid and hence we should move away from digital, then we should be doing the same for these other critical systems as well. Is this even practical now? Shouldn't we be going down the path of inventing chips, systems, algorithms, protocols and proof methods to secure these systems?