That's the way how closed source things work. Good, they didn't port it as port and cease support after some time is much, much worse thing.
Is the matter open-souce thing ? Debian is open-source, I mean, Linuxes are open-source, they have WPS though.I understand the value of Kingsoft as an application, but wonder why the developer posted the question here in the first place. Some people are just blind to the concept of open source I guess.
But don't worry about it, in Linux I already underwent a situation like that, ok it's not pleasant but people there still prefer having the option of using the software (even with some drawback once in a while) than not having at all.The thing is that closed source is guaranteed to cause problems at some point. Somebody is going to be dependent on it to read something for college with a deadline and it's going to be broken because they just did an update. That said, I vote for having it available as a binary anyway.