Apple's Safari Ai Shakeup aims to challenge Google's dominance in search.Alphabet's stock dropped 7.3% with news of Apple's plan, causing a market value loss of about 150 million dollars.Apple is negotiating to incorporate AI services like ChatGPT and Perplexity into Safari, potentially replacing Google as the default search engine.Google's shares took a hit as investors fear the unraveling of the longstanding Apple-Google partnership.