true, but with google you have a choice. ISP's are generally granted monopolies and most people don't have a choice. Google only hands over data when mandated by courts or government. ISP's are looking to actively share and sell your information.

While I agree that Google is likely more trustworthy, I think it is naive to think Google does not sell your information; that's how they make money, right?

that is not how they make money. They make money by showing people ads. All they allow you as a user to do is specify attributes you're targeting and the people that view these ads ... match those attributes as best as possible