All kinds of mobile users are definitely in play too. Trucks, cars, yachts, tankers - all need a connection, and in the middle of the ocean or in the Siberian plains you don't have many options.
My friend is right now swimming under sail somewhere in the middle of the Pacific Ocean, and she'd definitely benefit greatly from an affordable high speed internet connection.
$80 is what I think subscribers might pay (on average) for Starlink - it's a guess.
When you look at what subscribers pay worldwide for internet, it varies, but in the U.S., I currently pay $50/month for 3mbps/0.768mbps DSL (Yuck!) in the countryside. When I'm traveling, ATT is charging around $100/month for unlimited LTE at 8mbps/8mbps. If Starlink can give me 10mbps/10mbps or better at $80/month, I'll take interest. Even more so if Starlink can replace an Iridium go when out at sea.
I'm not sure how Starlink will price services around the world. It'll be interesting to see how they work out the terms/pricing globally. If they are competitive though, I think there are enough customers in the U.S. to make it a profitable project.
My dad pays something like $80 a month for his 1.5mbps DSL line from CenturyLink. It's such a scam, but he can't get anything else. $80 a month for something decent would be a no-brainer. I even signed him up for the beta, since he's in a rural area. I'm just hoping he is rural enough though, because he is only about 6 miles from the city. 6 miles though should be close enough to get decent wired internet...
I'm pretty sure that says more about your lack of imagination than the economics of Starlink. There are already multiple geosynchronous satellite internet providers that provide incredibly shitty (and expensive) internet service that you would only pay for if it's literally your only option. If Starlink can provide service at less than $100/month, it's going to put all of those companies out of business in a matter of just a few years.
My friend is right now swimming under sail somewhere in the middle of the Pacific Ocean, and she'd definitely benefit greatly from an affordable high speed internet connection.