"But HTML 5, the next big standard for the web, will dramatically reduce this (apple's)control by creating a new generation of web sites that look and feel like they’re iPhone apps."
I cannot agree with this view. It seems to be a poor researched stuff and jumping to early conclusions.
Just realize that , out of the 2 main HTML 5 editors, one is from Apple and the man is David Hyatt.Check out.
David had made significant contributions to safari, webkit and co-created firefox as per wikipedia. If HTML5 expert is from Apple , will Apple's offerings be lagging ?
Usually standards/specifications progress is slow with different vendors having different view points. Example is the web services specification being battled still by IBM, MS, SAP,Oracle(earlier sun, bea were in the game ).
Apple will ensure that it’s technology or rather it’s offering is delivered through a good ecosystem and will be miles ahead of a pure technical progress such as HTML5.