As someone else wrote, you seem to have some specific needs that 99% of us do not.

When I write that I have 286Mbps, that is usable speed not marketing speed. Did you somehow think I grabbed a very long network cable that would reach into the garage? No! That is speed I measured using wifi while standing as far away from my router as I could get. That is being limited somewhere and it's likely on the WAN side but it's more than I need and more than I paid for so I have no complaints.

200Mbps is very slow compared to what, the bandwidth I need, the bandwidth that is available, or what the Jones' have next door? A 1Gbps fiber WAN or 800Mbps in the bedroom is great to brag about but if a user is only using 40Mbps to stream to a TV then 960Mbps of that WAN is going entirely unused. I can brag that my Maserati does 185 but that only means I am paying for and maintaining a lot more car than I will ever use.

If you care about what ghz network your ecobee or nest or MyQ or Meross or camp chef grill or irrigation controller uses then either you have specific needs that most of us don't have or you're doing it wrong. I don't know and don't care whether my devices are using the 2.4GHz or 5GhHz bands because I know my router supports both. If I choose to turn one band off or use different SSIDs or passwords then shame on me for fixing something that wasn't broken and causing a problem.

Many of us will do just fine with 200Mbps and the single modem/router provided at installation. Some of us will need more hardware to recover signal loss going through the house or out to the yard (I'm fortunate that I don't). But few of us will need (or want) five mesh nodes to have a perfectly usable in-home network.

We have DirecTV satellite. Started with them in 1996. Overall we're happy with it. It costs a bit more than streaming, but we like the convenience of not having to search different places to find what we want to watch. And to get the channels we want, streaming isn't going to save us a lot.

Streaming prices have steadily increased the last few years. They all started out very low to attract subscribers.
So keep in mind, streaming is cheaper...for now. But the prices will continue to rise due to the increasing cost of programming. As they add content it increases their costs.
Many are struggling to be profitable.

If we do switch it will probably be DirecTV streaming or Youtube tv. But they lack a few channels we really like. So for now we're happy with our choice.

One good thing about streaming though, if you don't want all the channels like us you can pick and choose what works for you. That does save money.

Do your research!

The best thing about streaming is that if you split your time between two homes, most streaming services will work at both locations. With cable, you need to subscribe, and pay for, the same service at both locations. We now have Xfinity internet only at both homes. Peacock is free with Xfinity internet and we pay for Netflix, Prime, and YouTube TV. Our total cost with this setup is substantially less than what we were paying Xfinity for both internet and cable TV up north, and we could only use the service at that single location. With streaming, we pay less and now have service at both homes. The streaming learning curve was surprisingly easy using Roku devices on all our televisions and we love the cloud based DVR service that comes with YouTube TV.

This is really the whole point. But you're pretty old now, you might lose your license and then you won't drive.

Just sayin...

. . .

Most of us don't NEED to know how to "implement a network." Most of us are just people who want to stream videos, browse the web, use our printers, watch TV, maybe pay bills with our bank's online banking system.

It doesn't matter if we know what gHz we're running on our network, or from our router. You don't have to know that, to plug in a cable and turn on a machine and see that everything is running smoothly.

My ISP didn't tell me anything, I did my own connecting with my own router and modem that I bought at Staples. I still don't know what gHz I'm running, and I don't care. It's irrelevant, as long as the network does what the user needs it to do. If it's not, I can always figure it out. But chances are, whatever goes wrong won't be the result of a low gHz. It'd probably be a loose cable, or an old modem burning out, or a computer virus, or running too many devices at the same time. Y'know, the common things that can cause a LAN to slow down.

I got an early preproduction HD HomeRun that supports ATSC 1.0 & ATSC 3.0 TV but does not support DRM. PBS & CBS are the only stations that I can get ATSC 3.0 because they do not require DRM like all of the other ATSC 3.0 in our area.

I also got The Zapper Box ZapperBox M1 - ATSC 3.0, 4K, HDR, and Dolby(R) AC-4 Tuner . I can get all of the stations & can DVR the stations in our area including ATSC 1.0, 3.0, & 3.0 with DRM.
The ZapperBox has little or no issues with severe weather we occasionally get. I live in the northern part on TV which shows they have an excellent turner. :pepper2:

PS
ATSC 1.0 is the current standard used by everyone. ATSC 3.0 is the new standard that will replace the current 1.0 but they keep delaying when this will happen. The major networks in Orlando are currently using both.

YouTube Video about Cord Cutting
https://youtu.be/Pnk794EFUR0?si=2Fq9ozeWLugm-a_i