Final answer:
Lenovo's primary issue under Amelio was ignoring product innovation, which is critical for staying competitive in the tech industry.
Step-by-step explanation:
The primary problem that resulted from Amelio's management of Lenovo is believed to be ignoring product innovation. Under Amelio's leadership, Lenovo faced difficulties primarily because the company did not prioritize the development of new and innovative products. Instead, it focused on other areas which ultimately led to the company's underperformance in a highly competitive tech market. By not investing in product innovation, Lenovo missed the opportunity to keep up with rapid technological advances and consumer demands, which are crucial for staying relevant and successful in the tech industry.