Could any expert shed any information on why we lack a professional front-end WYSIWYG kind of editor for the web ? I remember tools like dreamweaver/frontpage existed a long time ago, but don't hear about them anymore. Is it something that's too hard to make or is it just that the market doesn't exist ?
In the past creating rich experiences was in things like Flash. With it's premature flogging, the side effect was there was little to actually and reliably replace the rich experiences it was able to create 2007-08. That's one reason seeing tooling like this, and Adobe Edge is something to look forward to.
Adobe Edge is dead.
https://www.adobe.com/products/edge-animate.html
Note: As of November 2015, Edge Animate is no longer being actively developed.
Prior to cessation of development it stagnated for a few years before finally being put down. Shame, really.