1. Baidu's AI advancements face competition from DeepSeek and Alibaba; 2. Baidu's core advertising business is hindered by user experience and bid-ranking systems; 3. Baidu appears overvalued at 1.5x forward EV/Revenue compared to peers; 4. Investors should avoid Baidu due to uncertain AI leadership and focus on higher-quality Chinese stocks.

1. Microsoft's initial lead in the AI race is being challenged by open-source models and shifting customer preferences; 2. Open-source models like Meta's Llama are gaining popularity and threatening Microsoft Azure's growth; 3. The rise of on-premises AI deployment, facilitated by companies like Nvidia, is undermining the need for cloud migration and further impacting Microsoft's AI edge.

1. Apple's AI system, 'Apple Intelligence', faces delays in release; 2. Competitors like Samsung and Microsoft are moving quickly with their AI offerings; 3. Apple's strategy and challenges in the AI race.