The trick is that architects are often also just commissioned for the project. You work together to make a nice-looking, structurally sound, and not all too expensive design.

I think it is a nice remark :-). Sometimes the design has to make a little concession, sometimes the construction. The best engineers are those that think along and try to find solutions, the best architects have some understanding of what is possible. And often 'everything is possible, it is just going to cost a lot'.