It works with things you are required to have as well.
Insurance is a varied field from legal minimum insurance to something that will actually protect your family. Since it is so varied, advertising helps being people in. I know there are a couple of car insurance companies that don’t advertise, but they are also very picky on who can get their insurance.
Amazon has been trying to make sure it can be on all streaming devices as it provides the back end to a lot of other pay streaming channels. FreeVee was probably their Trojan horse to get people Amazon accounts and a service that low end streaming devices would need to serve.