Comment XForms and XUL Real-World Case Studies (Score 2, Informative) 366
A good real-world case study of premature standardization is W3C XForms. I had a discussion back in April with the XFroms community and spec leads on the www-forms@w3.org mailing list that you might wonna check out.
See the threads entitled "Welcome to the Real-World; The Future of XForms" and "The Devil of Good is Perfect", for example.
Another good real-world case study using the "build it first and standarize later" approach is XUL (XML UI Language). Innovation using XML to build UIs is flourishing and slowy a XUL community is emerging. For getting started with XUL check out the XUL Alliance Link-opida and see a replay of the original HTML story in the upcoming XUL browser wars and standardization drive and more.