I don't actually want to join in on the constant demand for an EXE exporter. If I really do need to make a standalone windows game, Construct Classic does a fine job for now.
Still Ashley's statement has me slightly worried. While it may be true that WebGL will eventually be widely adopted and browser games will improve massively in graphical quality and performance, a standalone executable game is still a whole different story.
For the foreseeable future there will still be a demand for native win/mac/linux titles. I don't see massive fullhd 2d titles with tons of content running in your browser any time soon.
Browser games are still best suited for smaller, more casual titles or ones that are directly integrated with some social network. While standalone games can be anything really and don't need to deal with the problems different browsers might pose and also can take much better advantage of the actual pc power.
So what I'm saying is basically: one can't really replace the other, the scope is just different. And since I was under the impression Scirra was out to make Construct 2 the ultimate game development tool, not just the ultimate web
game development tool, I'm very positive there should be an OpenGL exporter somewhere not too far down the road.
Relying on a third party to do so would be a mistake in my opinion. I bet that the exporter would sell pretty well too.