Lots of companies still work like you said. With a company like Amazon, though, you have two things at play.

The first is that it takes a massive amount of dollars to make an impact on revenue. You're just not going to move the needle by selling a new product or something. It's a mature business and to meaningfully increase your revenues you need to alter people's current behavior so they spend more.

But, the second thing, is that if you manage to increase revenue by a percentage point, that is a huge amount of money, and that potential payoff can justify a huge investment. And once you've made that investment, there's a lot of incentive to try to make it work (between sunk cost fallacy and potential payoff).

Lots and lots and lots of companies fail because they build something that doesn't solve a need. It's like the number one thing you learn. This is nothing new. It's just that in the age of hyperscaled tech companies, the payoff for unlocking a new market or changing user behavior is huge, so you end up with lots of attempts to develop some technology and then figure out how to use it to change the world.

I actually think this sort of thing is a huge part of SV-style companies are increasingly viewed in a poor light by normal people.

It's hubris. The mindset takes "People don't know what they want. We do." far, far too seriously.

they want you to shop with your voice because there is a lot of friction if you then decide that's not what you really wanted. most people if they mistakenly order something with alexa will just let it be delivered, not cancel it.

same with using a mobile app to shop. you have less ability to cross shop quickly because the interface is inherently slower than a mouse and keyboard plus the OS multi tasking features are horrible. plus they get a lot more information about you with their app.

so it's not always that they think the feature is better for you, it may just be that it's better for them.