[Jetrel]

Yeah, Echo's probably a perfect example of doing this right, and honestly, the more I'm thinking about this, the more I'm realizing Amazon's doing this stuff surprisingly well.

And it's probably down to that: Commitment. Amazon is doing a few different things like AWS, but anything they're doing that's an honest-to-goodness "platform" other people build their stuff on, gets kept alive long enough to either let people build things that matter, or they give people plenty of heads-up that a business is going to get wound down.