I don't know. I've always gotten the feeling that Jobs is a perfectionist to the point of it almost being a pathology. I doubt his motivations are primarily focused on money, especially at this point.
If there were any way to quantify this -- "quality-of-life improvement credits" -- Apple would likely be quite rich in these as well as simply in financial currencies.
Its hard to imagine now but there will be Apple without their fearless leader one day. They are a profit seeking venture like any other--brilliant marketing has people convinced otherwise.