They also got a lot wrong (no where near enough low-income housing .. and a lot of the decent low income housing requiring you to be below the poverty line -- leaving the middle class in really tough spots paying Amazon employ rent while barely making enough to pay it.)
It's still not really working. The homeless problem is still insane. There are still a ton of one unit dwellings that no one is bringing up to code; the ones that use to house the very low income around places like Belltown.
Another thing that didn't "just work" was Amazon giving new employees discounts in certain condos. Turns out someone in HR didn't realize these types of deals were illegal, since private groups can't offer housing discounts or subsidizes or it violates various Fair Housing laws.