I don’t understand why Apple doesn’t invest more in testing and bug-fixing. It is not as if they can’t afford it. Bugs lead to unhappy users, which in turn lead

I don’t understand why Apple doesn’t invest more in testing and bug-fixing. It is not as if they can’t afford it. Bugs lead to unhappy users, which in turn leads to brand damage. You’d think it would make business sense to spend more on improving quality and hence preventing further such damage, possibly even reversing some of the damage already done-convince people “Apple is different now”, some people will forget their past bad experiences