It is pretty clear that they want to control more of the market for themselves, for more margin, what with ever increasing GPU development costs and increasing supply side from the likes of Samsung/TSMC means less of the pie for Nvidia, especially if they end up with real competition in the market places from AMD/Intel.
It does beg the question, how long before there is only Nvidia FE, and maybe ROG to chose from, next generation, the one after that - maybe they'll just go full Apple and be the only vendor of their own hardware.