@Richard Connamacher and others: If you think the article is against prefixes or vendors innovating, you apparently read it without paying the least bit of attention to most of it. Let me highlight a few parts:
bq. Yes, sometimes browsers come up with good stuff that does get standardized eventually (XMLHttpRequest, Drag and Drop API, contentEditable, Web fonts, to mention a few). However, nothing prevents them from innovating and following the standards process. Nothing prevents them from coming up with something cool, proposing it to the appropriate W3C Working Group, and improving it through collective feedback before rushing to implement it. If Microsoft had done this for the Drag & Drop API, it wouldn’t be such a PITA to use.
bq. Not every prefixed feature is proprietary. Some of them are just experimental implementations of features included in draft specifications.
Also, I’m surprised at how many people seem to be aware of what the W3C really is and what the Working Groups consist of. There is usually 1-3 W3C staff members in every WG and that’s it. *Everyone else in them are from W3C member companies, and in CSS most are from browser vendors*. There is nothing that the W3C standards dictate “from on high”, it’s still the browsers innovating. The difference is that they’re doing it as a team with others, not on their own, which results to better features.