I think Adobe is looking at a web based Photoshop aren’t they?
Browsers have limitations and PS is a complex product. Consider this, Adobe made a native iOS version of Photoshop for the iPad and it has just a few select features that the desktop version offers, the performance isn’t that great as well… So, if Adobe can’t even create a native Photoshop clone for another OS (that centrally shares core code with the desktop version) what makes you think they would be able to deliver anything on a browser that would come even close?