Yes, that's different (and, with capability-based security, a step in the right direction). Thanks for pointing it out.

I'm not sure how Tansley's concept of ecosystems applies to software (it's just a buzzword to me), but if you mean how to get software running on existing systems to run on a new system, that would take time and effort. If the operating system is intended to run on specific devices (like Magenta/Fuchsia), it might need its own "ecosystem" anyway.