>I hear this raised every now and then, but is that even feasible economically? Those embedded cell connections are a recurring cost, after all.
That's a great question. If it's not today, it likely will be soon.
I think it may be so already. These are niche cases, but the costs aren't so different than TVs:
I use a CPAP machine and the one I got six years ago had a cellular modem (as well as WiFi) without my involvement in any mobile account. Thankfully, I was able to disable that (and a big "Fuck you!" to Philips for being such rapacious scumbags).
I also got a Kindle as a gift in ~2004 or so and it had both WiFi and a cellular modem with no charges to me.
>Seems like UI nudges and dark patterns to push users into connecting their TVs to their home internet connection would be cheaper and more effective.
Cheaper? Definitely.
Effective? Most likely yes.
More effective than a cellular modem? Methinks not so much. A device connecting to a network over which you have no control would be much more effective, IMHO.
Aside from a small group of folks who will shoot, stab, defenestrate, bend, fold, spindle or mutilate such a device, most folks would likely just shrug and move on while being forced to watch ads.
And more's the pity.