It's already not. If you look around for Stadia comparisons you find that it is maybe on par with an Xbox Series X, usually not even that. That is all not taking in to account the degradation in quality video compression brings (like it looks the same on Youtube but in person you'd notice the lack of compression from the Xbox).Games also have an inherit latency built into them. Higher frame rates produce lower input lag. I'd personally would rather buy a 1080P monitor at 144Hz than a 4k Monitor at 60Hz just because of the increased response time. For years console games claimed that 30fps was good enough for anyone and that's clearly a lie. If frame rates drop then input lag is increased, and Google isn't using state of the art graphics for their servers. Their CPU's aren't high clock speed CPU's either so again frame rates will drop bellow 60fps. They could just lower texture quality and turn down graphics but that means the gameplay experience won't be on part with a high end gaming PC, which is kinda their selling point.