I agree with the sentiment, but what’s sometimes overlooked is that the community around a technology is in many ways more important than the technology itself.

I agree with the sentiment, but what’s sometimes overlooked is that the community around a technology is in many ways more important than the technology itself. Can I expect to find add-on libraries that help integrating with the rest of my technology stack? Will I find documentation, blog posts or StackOverflow answers that solve my specific edge case? How likely is it that I’ll be the very first person to encounter a critical bug, because no one else uses it at that scale? Many of those signals are not easily faked, as Microsoft itself painfully learned when spending billions in an attempt to artificially prop up a developer community around Windows Phone. If, as the grandparent suggested, Service Fabric is losing out even internally at MS where they can apply management pressure in addition to marketing, that’s a very bad sign.