The Web community is not pursing this course, but instead is insisting on wide displayability at all costs. There are two main problems with this approach. First, it standardizes the format and the translation mechanism, which isn't helpful. It seems that the purpose is to allow browsers to do the translation themselves, but I don't see any advantage here. The web server still has to provide .
Standardization here is a significant constraint on any web site that submits to it.
Second, it forces the server to provide a relevant style sheet for each possible kind of browser, and furthermore, as far as I can tell, it forces the server to choose the style sheet to provide the each browser. Both of these cause problems for wide displayability. They force servers to know about each possible kind of browser, and they force servers to detect which kind of browser is currently visitting. Let's stop wasting efforts on impossible goals. It would be much simpler for each server to provide its data in a few formats, and for browsers to choose the format most relevant.