I never understood why everyone suggest that a B2B software MUST generate (or lead to) money for the client to reason the purchase. For example, what about secu

I never understood why everyone suggest that a B2B software MUST generate (or lead to) money for the client to reason the purchase. For example, what about security software? It won't generate any money and in most cases won't even prevent losing money due to security issues (as it doesn't happen SO often), yet almost every company values security so much they will happily pay a lot of money for a bulletproof security software.