I find your thesis interesting (that agile ended the top-down design approach resulting from statecharts modeling). Do you have any references/links I can review to support it? It is true that agile seems antithetic to Big Design Up Front (http://www.agilemodeling.com/essays/bmuf.htm). However the methods did seem to have found commercial success (in safety-critical software) albeit not in front-end programming. I believe instead that the drivers of adoption/rejection are specific to the success factors in specific industries. That or maybe front-end programming is driven more by trial and error (+ hype?) than by engineering.