Hey Jeremy. This is not 100% accurate. Yes DMX are making huge steps and they are No1 choice, right now, for both back-end, front-end development, but Webassist still have many great features that others don't. Consider E-cart. Is the best solution for custom ecommerce development. Furthermore even outdated Webassist products support many things that DMX still does not. If you ask my opinion. the best would be a combination of both. They would simply rock!
I think Webassist won't let us down. They still are a great alternative (Ecart is currently the unique solution for custom ecommerce development) and when the 'updated version' will be released I am sure it will be a great solution for custom web development.