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.
1m*$80 per month=$80m per month ~= $1b per year
If the project costs the estimated $10b, the capital cost and operations cost should be covered, or close to it, at ~ 1 million subscribers.
This looks like a milk run to me, but I guess we’ll have to see how subscriptions go.
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.