I don't think there's really any reason to think it won't take off in the datacenter, on Chromebooks, on Android devices, and network/embedded equipment as you

I don't think there's really any reason to think it won't take off in the datacenter, on Chromebooks, on Android devices, and network/embedded equipment as you mention. Each of these will have a different timeline, but these days there are major markets which are more agnostic to ISA than they were five years ago. The inherent commodity nature of designs and silicon based on a royalty-free ISA will drive down prices to the limits of design and material process, which will drive adoption.