I guess I would point to the Yahoo security breach as an example of how poor security can have an adverse financial effect on a company valuation and its CEO's

I guess I would point to the Yahoo security breach as an example of how poor security can have an adverse financial effect on a company valuation and its CEO's remuneration. The Sony hack also comes to mind as something which damaged it's reputation and had an indirect affect on their financial position. If hackers could get access to WhatsApp and dump all messages to Wikileaks it would make the company look very bad and a significant number of users would switch to something else. If security is not that important to users, why pretend to add end-to-end encryption at all?