Apple have several ways to control what can run on their devices: Prohibit plug-ins like Flash, cripple the Java they run, or simply limit the installation process. But HTML 5, the next big standard for the web, will dramatically reduce this control by creating a new generation of web sites that look and feel like they’re iPhone apps.
I think HTML 5 will transform the web to the next gear. See how Google Wave looks for example? Both Google Wave and HTML 5 IS the future. If Apple makes so the iPhone can't run HTML 5 Web apps, then they has gone to far. I don't think they will do it anyways. Interesting thoughts though. Knowledge: http://kb.clipotech.com/html5