Google's WebKit&V8 based Chrome browser and Mozilla's future

What is Mozilla going to do as all bigger companies like Nokia (WebKit embedded in Qt), Google, and Apple are going to use WebKit and Javascript engines like V8 and Squirrelfish related to this rendering engine. Also Apple's Safari and Google's Chrome are really strong Firefox competitors. Would it make sense for Mozilla to switch to WebKit? In fact Firefox is basically its rendering engine Gecko. And if you replace Gecko by WebKit, just the ugly Firefox GUI remains which looks like a rusty nail in a crystal carafe if you use Firefox with KDE 4. I doubt if there is a bright future for Mozilla's Firefox. At least their market share will follow the current stock market: Downstairs.