As far as we can tell, only a tiny fraction of Construct users are actually publishing to Xbox, which Construct does support (at no extra cost, I'd add). That's not to say it's not important - often those that do have the best games - but I think that actually this idea that most devs publish to consoles is not accurate (at least when talking relative to the entire userbase of Construct). I get the impression most devs aren't actually actively publishing to console, just they want the option. They're essentially asking themselves "what if my game does turn in to a success? Will it then be easy to take it further?" This is a reasonable question to ask - it's essentially planning for success, which is a good business consideration.
However this then ends up with a slightly odd situation that everyone wants console exports, but very few people actually use them. It's a difficult situation to do something about because it seems likely that actually making console exports is uneconomical. Consider just how expensive the console exports are for YoYo Games, even with a much bigger staff, more funding and presumably more customers...
Meanwhile there are third-party porting companies out there like Chowdren who are already successfully porting Construct games to consoles. I also think one of the reasons we don't see much usage of Construct's own Xbox export option is because people who go to third parties to cover consoles tend to throw in an Xbox port while they're at it. This also suggests that unless we cover all console export options - the most difficult and expensive option of all - then in practice a lot of people still won't use them, reducing a small userbase even further.
So I think the main impact of the console export aspect comes down largely to perception. Also trying to solve it ourselves could prove very costly, especially as a small company playing the single-codebase card to great effect - and then there may well end up being very few people who use it. I think the best thing we could do about that is find a way to partner more closely with third-parties who can port Construct games to console. That's something we're thinking some more about and we've already had some conversations about it. It could be that there's little awareness that option even exists for Construct, and more people would choose us if they knew about it.