Why did Apple stop using Nvidia?

Could you elaborate on the reasons behind Apple's decision to discontinue its partnership with Nvidia? Was there a technical incompatibility that emerged between the two companies' hardware and software? Or did Apple seek to reduce costs by switching to an alternative supplier? Did Nvidia's pricing models no longer align with Apple's business objectives? Was there a strategic shift in Apple's product development roadmap that necessitated a move away from Nvidia's GPUs? Understanding the precise motivations behind this change could provide valuable insights into the dynamics of the current hardware and software landscape.