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You do know it is impossible to stop all cyber attacks?This is a fallacious argument, specifically the Nirvana Fallacy. Perfection not being achievable in no way means that there can't be standard best practices that are a minimum requirement, nor that liability cannot still exist. Certain types of cyberattacks are in fact possible to stop perfectly merely by virtue of not holding onto information at all. As a trivial example, there should be no plaintext password leaks (or even easily brute force password leaks) at all, ever. Adaptive hashes/key stretching have been a thing since the dawn of security, Robert Morris described CRYPT for unix password usage in 1978. bcrypt is from 1999. There has been no reasonable basis at all for plain text or even raw fast hash primitives to be utilized, ever, yet they have been. In no other industry dealing with these kinds of privacy and safety concerns is that sort of practice considered acceptable, not should it be.
Holding personal private information at all long term should fundamentally be considered a liability situation, because it's not necessary, it's a commercial choice. Can't be hacked if it doesn't exist. If businesses choose to hold it, they should also be taking reasonable steps to protect it, and accept liability for failures. That's the natural balancing flip side to them getting profit from using it. If they're allowed to turn any costs of holding it into externalities that distorts the market.