I'm not even looking at Lenovo's profits. I'm comparing their revenue to Apple's profit just to emphasize the difference in scale.

By the numbers, Apple is a smartphone business that has a casual side hobby of also being the #4 PC maker. Their PC sales are ~3x less than Lenovo's, but their smartphone sales are 10x their PC sales. There's plenty of commonality so the massive smartphone business surely helps with supply on the computer side of things as well.