This is completely wrong. Apple makes very little of its revenue from advertising. Their cash cow customers are iPhone users.
Shareholders are owners and shareholders want money. The way to get money is from customers. You don’t make money from shareholders unless you’re running a Ponzi scheme.
Customer is a recipient of goods provided by seller or vendor in exchange for money or other valuables. User of free service is not a customer by that definition. Unless you would openly treat privacy as currency.
Investor who gave a company money is - in my view - a paying customer. They give a business some cash, expecting more in return. It is not paying for service but it is still paying and expecting something in return. A publicly traded company is a product itself and investor is buying that product.
I'm a MacBook Pro 2017 owner. It's the negativity towards Cook's Apple in general.
Currently my biggest issue with Apple is that their phone is still the lesser evil. Other than using iPhone, Jony Ive and Tim Cook efficiently moved me to other brands.
I don't believe this will impact AAPL's price though. Shareholders and ad sellers are the only "customers"/"users" Cook's Apple is interested in and works for and news of this vulnerability will be shushed or soothed outside of tech forums.
Whether this will be somehow fixed (Dear Cook's Apple, consider starting with not keeping decryption keys together with encrypted data, duh) or ABI/compatibility will get broken, Apple's marketing will sell the news to shareholders as an improvement and the magic of capitalism will boost the price.