Even a duopoly (!) would be preferable to a single vendor.
The initial drafts of CSS 2.1 on the other hand, were published in 2002, yet it was 2011 by the time it became a full reccomendation despite having been in use for a long period by that stage. CSS3 colors (i.e. rgba() etc.) also became a full recommendation on the same day.
> Two months earlier, in March of 1998, CSS 2 had become a W3C Proposed Recommendation (PR) which meant that it was considered "done" and was simply awaiting a procedural W3C member review and vote. For all practical purposes, nothing else was going to get fixed in CSS 2. There wasn't a Candidate Recommendation (CR) phase back then, as evidence by the fact that no-one (including my Tasman team as part of Microsoft Internet Explorer 5 for the Macintosh) was able to implement CSS 2 as specified. The problems in CSS 2 were far more severe than mere errata - we had to develop a full revision to fix it.
http://tantek.com/2011/160/b1/css-2-1-css3-w3c-open-web-stan...