It will need some form of compatibility to get a foothold in the market, though.
Fuchsia won't run android apps, but fuchsia apps will run on Android and iOS.
[1] https://9to5google.com/2018/04/26/fuchsia-android-runtime-ap...
Chrome OS already runs Android, so it would be a matter of stitching the Chrome os shell into Fuchsia to have both running in Fuchsia. First with virtualization of Linux, and later without it.