I hope poeple from TIGsource would recognize this as much as GM and MMF
Give it some time. Construct still has some obstacles to overcome, but eventually it'll blow Game Maker and MMF away.
I think the controller system would be the next big thing to tackle - the easier it becomes to do the 'technical stuff', the more designers and artists will start using Construct to create some awesome stuff.
It'll only take a really big hit being created using Construct.
If you build it, they will come