This Apple TV doesn’t support 8K display output. That’s what it’s called the “Apple TV 4K.”

Gigabit Ethernet has 7x the bandwidth of a 4K UHD Blu-ray.

If an 8K Blu-ray standard were to ever exist, in what universe would it somehow 7x the bitrate to increase the pixel count by 4x? And of course that math is assuming that this new hypothetical new standard that does not exist wouldn’t use newer compression standard.

In what universe will 8K content be streamed at greater than 3x the bitrate of the average US home broadband speed? (300Mbps) 8K streamed content will almost certainly top out at 100Mbps.

The current bandwidth cost math at major CDNs for consumer use cases at that bitrate is hundreds of dollars per month, before you even pay for content.

The idea that any streamer will be bandwidth-limited by a 1Gbps network link anytime soon is absurd.

I'm not sure what bit rate and what CDN prices you used, but at these data levels I think you'd definitely want to get your own bandwidth. So even ignoring the free colocation and peering a big streaming provider can get, I see a bunch of offerings for $30-50/Gbps in the US and EU. And what percent of 8k tier users are going to be watching 8k simultaneously, maybe 10% peak? A service could use 1-2Gbps if it wanted to. There's no reason for it, but it could.