How frequently do you travel? Do you work remotely and if so how do you manage to find internet connection? This is something I've been very interested in for some time now.
I work remotely, yes, but always have, even before traveling. Internet has gotten outrageously expensive in recent years, as no one offers unlimited data. I spend about $250 (sometimes as much as $300) a month on Internet (it used to be under $100) from two providers, and still often find myself out of data near the end of the month. So, you should budget for that, unless you want to spend a lot of time in coffee shops and libraries and such. I have friends who travel and spend much less, but they don't work from their RV as much as I do.
It's a pretty flexible lifestyle; one can, and people do, park the whole summer in one location and then move south for winter and spend the whole winter in the desert or southern California, or Mexico. Others travel nearly full-time. It's the benefit of having a fully self-contained home with wheels.
So my current plan is a Wifi Device from Verizon, plus Satellite Internet, plus lots of Solar and Batteries. This is not cheap, and I am pretty sure it will not resale very well.
The satellite dish alone is like $7,000 (http://www.rvdatasat.com).
But I know I'll be working remote for some time, and why not just go hit the National Parks for a bit. Of course, still need to pick and choose. Not sure I could rely on a view to a geo-sat from Yosemite Valley for example, but up high at Tuolumne Meadows should be fine.
I spend a lot of time in deserts, which have surprisingly good coverage, even quite far from civilization. Being flat, and all, makes it reach quite far from towers. Mountains are problematic, but even then, you can often find a place to park that's in a pocket of coverage...or you can hike or bike to a high point where you can get coverage. And, as you note, mountains are potentially problematic for satellite coverage, as well.
But, I use Sprint and T-Mobile. Karma is on the Sprint network, so the same network, but with slightly better prices. I have a 40GB plan from Sprint ($127/month, including the hotspot and the line fee), and 16GB spread across two devices on T-Mobile. And, yes, my phone can tether, but I have two hotspots, as well. I use T-Mobile for the Binge On feature, which is zero-rated Netflix, Pandora, Spotify, Amazon Video, YouTube, etc. So, when I'm streaming, I use the T-Mobile data, and for anything else I use Sprint.
And, yes, prices are outrageous. It wasn't always this way. Clear used to offer unlimited data for $40/month, and I had an unlimited data plan on my T-Mobile phone, as well. I kept the actually unlimited plan for many years, even after T-Mobile no longer offered an actually unlimited plan. But, then they started blocking hotspot usage (even on a rooted phone; not sure how they were detecting it was being used that way), so I had to switch to another plan, which was more expensive and much more limited.
Anyway, it works out to about $250/month; if I weren't sharing it with my girlfriend (who does a lot of streaming), it'd probably be plenty. I never used to use more than about 30GB/month when it was just me. I watch a lot less TV when it's just me.