[seanw444]

Supposedly they're a relatively small team. According to another comment (I don't use it personally), they're missing a lot of features Adobe has had for decades, so they would probably understandably prioritize porting to Linux under even that.

[AtticHacker]

I sympathize with them completely. The effort needed to port it to Linux most likely won't be worth the small user base (and the even smaller percentage of Linux users that'll use proprietary software)