It's about choice. There may be no need for Flash with upcoming standards, but why should that not be something decided by market forces? The web is meant to enable people. This means allowing content producers to adopt whichever system (open or closed) they choose and allowing viewers to access this content regardless of platform. Adobe facilitates this with Flash as best they can.
It's up to content producers and consumers to decide, not browser makers. The iPhone still needs Flash 2 years on. No amount of rhetoric from Apple or its irrational fanbase (Dilger) is going to change that anytime soon. When content producers feel there is another product better suited to creating the web experience they are hoping for, they will use it. In the mean time, Flash Pro is where it's at.