I agree with Marco on this:
> In the absence of major exclusive features or strong social lock-in, if you make a feed reader today, it better support multiple sync services. Conversely, if you’re making a service, it better have an API for third-party clients.
I hope Black Pixel is not seriously considering only using their backend[^fn1], it would mean a true “end of an era” for a widely used Mac app[^fn2].
[^fn1]: In fact, it would seem to me that they could end up making more money, with less headache, but just making clients for Mac and iOS that sync to various other services.
[^fn2]: I am making the assumption that people will not be content to just use Black Pixel’s ecosystem on everything.