It does sadden me that ReactOS has not been mentioned even once in this entire discussion so far. Understandably, it is not a viable alternative at the moment. However, I will hope against hope. Looking back, Lazarus IDE had languished for a long while, before maturing. As I write this, I have at least 3 applications written in Lazarus running. So I will hope against hope...
I hope that ReactOS can get there while it still matters. Evidence suggest otherwise but I also hope.