> Alexa is a spy machine that makes already easy tasks marginally easier
For the average person who isn't super-bothered about privacy, the voice-activated functionality is genuinely novel and delightful.
> Prime Video is a 2nd or even 3rd rate video service in my experience
"2nd best to Netflix" is no slouch at all.
> I tried out Amazon Go a couple times and it just sucks? The selection is super tiny and honestly, I just prefer a self checkout with tap payments. I found myself constantly worrying if their camera system would correctly ring me up.
So - an intentionally-small-selection store has a small selection, your personal preferences don't line up with the (you must admit, extremely friction-free) checkout system, and you worried about a bug that (from the fact that you phrased it that way) didn't actually happen? Sounds like it's working extremely well for how it's designed!
(Disclaimer - I'm an Amazon employee, though I don't work on any of the discussed products, and frankly am pretty critical of them all both internally and externally too. But to claim that they're not successes _at the criteria that they are aiming for_ is mistaken)