I don't think nvidia will abandon PC gaming. I think it might spin off the gaming division at some point, but even then, I have my doubts. You see, gaming and AI GPUs have too much in common hardware wise, so it only takes "a few more steps" to make an AI GPU from a gaming GPU (like they did at first). So even if you reverse the process into AI first (like it's happening right now), nvidia would only have to strip down the AI gpu to build a gaming GPU
Also keep in mind that gaming GPUs are used for a lot of things, not just gaming, Professional GPUs are pretty much IDENTICAL hardware wise to its gaming counterparts, save drivers.
And don't forget not only nvidia is focusing on AI and "abandoning" PC gaming. AMD and Intel are doing it too. Of course, it doesn't hit as hard when combined, they only have less than 10% of the market share and Intel by itself, less than 1%. RDNA5 is maybe coming in late '27 if we are lucky and apparently intel has already quit the gaming front as gaming battlemage is apparently cancelled.
And lastly, the main reason the "big three" are "quitting" pc gaming is mainly because of the exorbitant RAM prices. While nvidia might get away with $3,000+ RTX 6900, not AMD nor intel could pull that off.
One more thing. Nvidia is the dominant player in pretty much every market its in, being gaming, AI, contest creation, previsualization rendering, post production, robotics, self-driving, multimedia, HPC, you name it. And I'm not talking about at least 50% market. In most cases its more than 75% and in many cases more than 90%. Do you really think nvidia would quit ANY of its markets when they have NO competition?