The problem with HTML is there's a decade lag between when the new font rendering is introduced and when you can rely on it to be accessible to all of your customers.
True, although I think things are speeding up. Chrome, firefox, safari, emergence of the iPhone as a browser...
HTML5 is definitely heading in the right direction though. WebSocket will be awesome when it arrives, making comet a thing of the past. <video> and <audio> tags will pretty much put flash out of business, etc etc
The more browsers that exist, the more stakeholders there will be in HTML 5, and the longer it will take for it to be implemented across the board. And if the process is anything like ECMAScript, it could literally take a decade.
Flash does everything you need for rich media, now. Sorry, but flash is never going away. There's Youtube and advertising networks that will guarantee its ubiquity.
I agree things are speeding up, but think it's largely because Microsoft is now realizing that they need to keep IE up to date and standards compliant. They still have 70%market share, and it's not shrinking fast, so the onus is entirely on them. IE7 is kind of a sucky browser but a step in the right direction in terms of compliance, and IE 8 will be much better.
70% might be true in some places, but it's changing a lot.
For example, Mibbit gets about 19% IE usage on the main client. On the widget as you'd expect that figure is higher - 30%.
The surprise is how well chrome is doing these days - usually beating Opera and Safari, and sometimes beating IE6.
I think most of the push is coming from firefox,chrome,safari and opera. People using the new wave of webapps aren't using IE, because it's ridiculously slow (Even GMail now deter the use of IE).
I'd say it is shrinking very fast in webapp early adopter circles, and that's a key area of growth for browsers. IE better up its game with IE8, or get left behind.
HTML5 is definitely heading in the right direction though. WebSocket will be awesome when it arrives, making comet a thing of the past. <video> and <audio> tags will pretty much put flash out of business, etc etc