You can care and be profitable, but it is usually cheaper to not unless regulatory mechanisms exist to internalize this potential externality. Can't rely on humans to do the right thing, some will not unless they feel pain for doing the wrong thing. Ergo, we build systems (legal, regulatory, technical, people) to encourage the desired target outcome(s).

I've worked with very profitable firms who care very little (and it shows in their systems and how they operate in this regard), and barely profitable firms who do everything right. What's the difference? Their culture, people, and internal incentives.

TLDR Security failures and data breach fines must be more expensive than the happy path and doing the right things. This encourages the happy path and doing the right thing, while discouraging doing not enough or nothing.