I don't know, because these various startups don't pretend to have a cohesive vision/platform/ecosystem with each other, but that's exactly what Google, Apple,

I don't know, because these various startups don't pretend to have a cohesive vision/platform/ecosystem with each other, but that's exactly what Google, Apple, Microsoft, etc do. I can't think of any apps or services that Apple has launched in the past decade and has since killed, whereas without even trying I can rattle off at least ten such projects by Google.