When is there going to be OSS alternative to Windows? No, Linux doesn't count. It's good for servers but terrible desktop experience.
We are looking for a full desktop open source to Windows so GNU/Linux doesn't count as an alternative, and neither does Wine. But the closest to answering that is ReactOS despite it not being a realistic alternative for the end user today.
Compatibility with Windows or POSIX would be amazing but not required.
* Yeah, I get it. Changing from `DT_HASH` to `DT_GNU_HASH` had to happen at some point. Backwards compatibility is a real chore, and not what glibc maintainers bound themselves to.
I think either desktops will disappear (replaced by commodified computers like Androids/Chromebooks); Or a large company will set some kind of standard what Linux OS is; Or some other OSS OS will not make same mistakes Linux did and guarantee a saner target for app development than current Linux.
I want (3) to happen (e.g. Serenity OS blows up and just devours Linux marketshare). I suspect (1) will happen - Microsoft/Google/Apple just make their locked down garden and Desktop computers go the way of the Dodo.