This comment tree is discussing how AI will provide a new way to music creation. Cheap smart phones are seen in poorer countries and communities. In the future, there will be models that run on these types of phones locally. They might not be the state of the art models at the time but they will be available.
If we assume the above to be correct then the "cheap" guitar is an additional cost whereas the AI music model isn't. In addition, guitar lessons cost money and spending time practicing is harder for some people than others due to their circumstances.
