Then of course there’s a lack of 5G. I certainly don’t have any where I live. Just about have 1 bar of 4g near the window.
WiFi/Cellular convergence as a concept also doesn't seem like the most unlikely future.
I've seen others in this thread argue embedded cellular isnt worth the cost, but this misses the critical point - if it costs almost nothing (we are close to this point already) and is already built into every off the shelf SoC, of course manufacturers will use it. We are talking pennies per unit at scale here in future.
The auto industry has already done this - Ford for example have embedded cellular analytics you can't turn off (or at least its non-obvious to me as an owner) on every single new Ford and has done so for several years now, and you don't pay a penny as the end user, even on their most basic entry level cars.
Same goes for any other appliance that radiates RF signals (IoT, etc.).
If cell access is essential, what happens in a place without cell access, much of Alaska perhaps?
I hate to think of all the lawsuits resulting from drivers who drive into locations where cells are out of range and get stranded.
Similarly, what happens when the cell phone system breaks down? And does that mean I can't buy a car if I live in an area with intermittent, weak or no cell or internet service? Hate to think what the manufacturer's sales department would think of that.
On the matter of reverse engineering, it seems to me we're just on the cusp of that. Hackers as still getting organized and aftermarket manufacturers have still to tool up for complete computer replacement kits. Reckon we're only at the very beginning of whole new industry.
Oh, I nearly forgot, the Right to Repair movement has only just begun to get organized. If manufacturers try to stop us altering something we've paid goid money for then they'll be in for a long political fight.
So they'll add a $50 LTE/5G modem to the BOM just to save the trouble of entering a password using arrow keys, a process that takes maybe 2-3 minutes?
I do this on old smartphones that I have no intention of ever using as a phone again (say for testing APS etc.). It's dead easy, a razor blade through the circuit board tracks that connect to the antenna(s) and it's all over—no phone, with or without SIM (i.e.: no emergency service) and no WiFi or Bluetooth.
Very simple really.