Well, that is why we need further development in security. Hackers are also finding new means on getting through security of wallets and funds. As time goes by a lot of money from other wallet gets hacked. Inside job is also common, that is why investors are beggining to become skeptical when speaking of security.
The hack happened not just because of security and inside job, but most of them were due to human error. There is no small number of people clicking random pages on the internet when they were browsing it thus leads them to get hacked. I think what we need to do is simplicity and biometric, we need to have a simple wallet to store our assets (without downloading this and that) and at the same time, it is protected by biometrics.
Quantum resistant could fix the system from the outside, but it would not be able to fix the issue from inside.
Biometric security might exposed our identity to risk, if we are going to let anyone know our personal records and identity, there would be no hacking incident for large projects or companies but will lead us to dangers whenever incase the information is leaked. It is very personal and we should be responsible about it. It is enough to have simple wallet without any third parties, those that we have the private keys.