How much of that was active dev time. I guess they spent half that time just in the concept stage. I also have to question why you would try to develop your own engine for such a project. Had they used Unreal they can at least point to Epic for all of these porting issues.

Considering steam can never run out of copies, I don't see the need to ever buy a game particularly a bigger game, ASAP.

I'll give it a year or so, the game will still be available to purchase it won't be in a much better state.