This gen and one more. We will turn to streaming or f2p titles altogether. Games will decrease dramatically in quantity

The same day gaming pc's are discontinued.

There is a market for a box that you can connect to any tv, monitor, projector and surround system. Really smart tvs won't replace that. Nor will game streaming as long as any lag and being restricted to rental fees and internet rush hour remains a thing. Nor will mobile phones as it will always be cheaper to put bigger, more power consuming / heat producing components in a big box, outperforming smart phones in both price and capabilities.

I wouldn't say never, yet I also don't think it will happen in the next 50 years.

Hopefully never...

I think around 10 years.