No. Unfortunately, ActivityPub just isn't geared up for that kind of thing. It's why BlueSky uses a different federation protocol called AtProtocol which is a lot more demanding than ActivityPub but is specifically intended for Twitter/TikTok style services.
While I'm generally of the opinion that there's no such thing as a 'good billionaire', Gates has, at least, used the bulk of his fortune for some laudable enough endeavours. He's one of the better ones, but if that's not damning with faint praise I don't know what is.
A severe simplification of the history, but: In the 1960s, say, if you lived in a town with shit TV reception the local authorities might set up a really good TV antenna on a nearby hilltop and run a wire through town that everyone could connect their TVs to. This was called Community Antenna TV, or CATV, which later became known as Cable TV. The coaxial cable used for this doesn't carry signalling like, say, twisted pair; instead, the purpose of coaxial is to provide an enclosed, shielded tunnel for radio signals to propagate along. The signal would fade over time, so repeaters would be added every so often to boost the signal and filter noise.
So, yes, all your neighbours can 'see' your data, because you're all sharing the same coaxial cable, though it's encrypted between your modem and the cable company's local headend. Those boosters I mentioned would historically break the Cable network into neighbourhood-sized chunks preventing the modem signal propagating too far, so there would be a local headend within the same segment for your modem to connect to. The bandwidth available is split between all the users in the segment, so having a second coaxial cable coming through the wall would be of limited utility; it'd be easier for your ISP to just allocate more bandwidth to your existing modem.
You mentioned Ethernet, but in most Ethernet networks we use switches that ensure that only the recipient gets to see the packets. In the old days we used hubs, which are more analogous to neighbourhood cable networks in that regard.
How dare you bring nuance, experience and moderation into the conversation.
Seriously, though, I am a firm believer that no tech is inherently bad, though the people who wield it might well be. It's rare to see a good, responsible use of LLMs but I think this is one of them.
Generally speaking the customer is the one paying for the product. For a commercial TV station, the customer is the advertiser, not the audience. The audience is the product being sold. Like IKEA felling trees to build furniture, or Exxon pumping oil, the TV station makes programmes as part of the product manufacturing process.
Also, this is a reason why public service broadcasters need to be cherished.
You're surprisingly wrong. Landlines exist but there is basically nowhere left in the world where landlines outnumber mobiles (except places like North Korea, obvs). Mobile networks are literally cheaper to run than landline networks and that gets more and more true as the quality of infrastructure drops.
I was once in New York using an AT&T payphone and trying to place a reverse-charge (or "international collect") call to the UK and the operator REFUSED to accept that UK phone numbers are ten digits long. You better believe I put that thing through it's paces.
They tried doing the same thing in the UK with a comedy duo, Mitchell (PC) and Webb (Mac). They were best known at the time for a Channel 4 show, Peep Show, where Mitchell played an educated, qualified, no-nonsense, go-getting, straight-talking realist who was a bit awkward and frumpy, while Webb played an entitled, self-aggrandising, directionless, scatterbrained half-wit convinced he deserved greatness... I forget where I was going with this.
It's wild to think about, but 3D filament extrusion printers are actually a lot more simple than ink/toner document printers. I think the age of printing - at least in home and small office settings - is coming to an end. Most people I know don't have one and those that do can only think of "so I can print boarding passes" as a reason.