A detailed technical guide to the security features of this device would almost be enough for me to buy one if their methodology was good and their security sound.
Even if it cost them 10% in sales they are still saving money since having solid security would cost way more and take more of the little time they have to bring the product to market.
Aside: I also realize that Apple or Amazon may pillage my data just the same, but I feel like they make money by actually selling things vs. selling my personal info and thus their incentives are skewed towards chasing things I'm generally more okay with.
Curious why you differentiate between Amazon and Google. Maybe you pesonally don't shop there, but they are the world's largest (maybe Ali in China is bigger by volume) online retailer and they have a metric shit ton of what advertisers really want, the data on shopping preferences.