Re: Current user here
So it looks good right now, if you need that sort of thing (and the more I read about broadband provision in the 'states, the more I understand why Starlink is a viable option), but when half your neighbours are also connected, suddenly 200Mbps down becomes a sustainable 20Mbps (to pluck a number from thin air) and short of launching more / upgraded satellites, which costs money, meaning more subscribers are required, there's not a lot that can be done about it.
Whilst I'm always loathe to suggest that "the market will sort itself out", in this case it probably will.
The properly rural will get high speeds from relatively uncontended satellites.
Those in small communities or under-served rural areas will move in sufficient quantities to prompt network upgrades (the presence of actual competition - a rare thing in the land of the free). The price-sensitive will go with the cheapest option, regardless of speed. Speed-freaks will pick the most performant regardless(ish) of cost. If the contention gets too bad people will stick with the incumbent.
Even if it isn't giving you 200Mb down, it will either give you better service than the alternative or will provide a sound alternative that keeps the local incumbent (a bit more) honest.
In terms of income, profitability goes without saying, and the US is irrelevant. Beta testing has been in limited territories, but it's a global service (subject to spectrum licensing).
There will be communities in Canada, South America, Australia and Africa who will snap this up. Whilst some countries will not bear US pricing, it will be steady income for them. It will also be in high demand for maritime and aviation - cruise ships offering sensible wifi speeds should be a lucrative market for SpaceX, along with antennae built into airliners (which SpaceX have already done some preliminary testing with some help from the USAF).
Whilst there is very limited polar coverage right now, they've focussed on building their first shell out, to get usable service for customers under those tracks - rather than global coverage where you only get 10minutes per hour. Shells in polar orbits are coming.
I wouldn't be entirely surprised if - five years down the line - they could give their US residential users free service, underwritten entirely by international and commercial users (they won't, because this is paying for Musk's Mars ambitions, but they financially they could.