I mean the main reason it exists is because. Nvidia spent a bunch of money designing and fabbing the Tegra for automotive use and nobody bought it so the project was desperate to find a customer rather than out of the goodness of their hearts. That's also why they sold it to Nintendo at a bargain basement price for the Switch.

I strongly suspect the reality is that they had to give Nintendo so much money back due to the complete failure of the bootloader security that they still produce the Shield as Jensen still demands they claw their way back to break even.