> Even the largest, most trusted companies in the world get regularly hacked

Yes, they do. Fundamentally this is because they don't spend enough money on security (like basically everybody else).

Some form of personal liability for executives is one (relatively simple) way to ensure that this becomes a priority, like SOX did for financial reporting.

There are other ways, but I do like the personal liability approach as its targeted, and has been used successfully in the past.