AMD is now very popular amongst home PC builders because they make better chips for the money and there's not many other requirements to consider. But AMD still has a lot of inroads to make because with premade hardware builders - whether it's laptops, office PCs or even servers. For example, although AMD is making way in the server space, it's not going as fast as one might expect for them having the clearly superior server chip (for most use cases) for quite some time now.
For hardware builders it's simply a time and money investment to start using AMD hardware. And although AMD is convincing them to do it - having what appears to be clearly superior chips in the laptop space is definitely a big plus there - it's something that takes time.