It’s more like 3 really wide pixels.

You are 10% hydrogen already.

They’d be expensive to run but it would likely only be for a few days per year.

“Pay for more electricity” might not work very well, if everybody in a region uses resistive heat at the same time. I’m not sure what the solution is… maybe an overprovisioned power grid, cheaper battery tech, or tanks of renewable backup fuel like dimethyl ether?

Well, if you currently have this problem and want to fix it, I’ve shown you the way. OpenWrt is free software.

Otherwise, there’s no point arguing about it.

Multi-hour downloads have been a thing since capacity was measured in kbps. If a simple TCP transfer causes excessive queueing, then the queueing algorithm is broken.

A router with OpenWrt and luci-app-sqm can fix this problem, at least for an internet connection with a fixed speed limit.

One major AAA game update will likely break your connection
One person in the house uploading anything will cripple your ability to make ANY request

You are describing symptoms of bufferbloat, not capacity problems.

Between 2017 and today, it was a mostly-blank page with the letter “x”: https://web.archive.org/web/20230722020649/http://x.com/

BL-5C is becoming a de facto standard size for random electronics, but it’s too small for a smartphone.

It is straightforward to run an isolated network with TCP/IP, DNS, and web servers. The hard part would be dealing with software that complains/fails if you’re not using HTTPS.

In general, you would want an offline copy of the entire software stack (e.g. a Gentoo Linux mirror) so you can patch whatever problems you encounter.