The research subject is: [FILL IN PRODUCT, COMPANY, PERSON, TECHNOLOGY, INDUSTRY OR EVENT].
Please use the longitudinal and cross-sectional analysis method to complete a traceable in-depth study of it. The research cutoff date is the day of execution.
Longitudinal analysis: 1. Under what background and needs was it born, and who were the key promoters; 2. What important turning points, successes and failures has it experienced; 3. Which early choices have become today's capabilities, path dependencies or burdens.
Cross-sectional analysis: 1. Select the most comparable subjects and explain why they were chosen; 2. Compare their strengths, weaknesses and uniqueness using unified dimensions; 3. Explain why users, customers or the market choose it, and why they abandon it.
Combine the two axes and continue to judge: 1. How will the capabilities, path dependencies and constraints formed in the past affect the future; 2. Which 3 paths are most likely to appear in the future; 3. What are the prerequisites and warning signals for each path to appear.
Please follow these evidence rules: 1. Prioritize primary sources such as official materials, raw data, papers, financial reports and interviews; 2. Mark sources and dates near important conclusions; 3. Write facts, inferences and opinions separately; 4. When encountering conflicting information, present it side by side; when evidence is not found, clearly write "not yet verified".
Finally output in the following order: core conclusions, key timeline, cross-sectional comparison table, detailed analysis, future judgment, remaining questions to be confirmed. The report should be between 10,000 and 30,000 words, written in plain language as much as possible, without piling up materials.
