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In a lot of cases I would agree with you, but laying fiber optic cable through the Amazon in order to connect remote settlements is not feasible, starlink really does have a good use case there.
And ocean communication.
It's amazingly clear none of these people have ever tried to use any of the existing Geostationary satellite data networks.
They are slow as shit. Not just by modern standards, by any standards. HughesNet is one of the remaining satellite Internet providers.
$50/mo gives you 50Mbps speeds, 100GB of "Priority Data", whatever the fuck that is (probably your 50Mbps data, then it slows). And that price is only for a year, then it is $75/mo. They also love to tout a 30ms latency somehow, but that's just a damned lie. Latency for a Geostationary satellite is around 500ms, or roughly the speed of light because that's physics. So I have no idea where they think they're getting 30ms, unless that's only the additional latency they're claiming AFTER it bounces off the satellite and reaches the ground to be routed to the internet on their end.
Starlink is a constellation of low-earth orbit (LEO) satellites, not geostationary satellites. That means that the ground station (i.e. subscriber equipment) talks to one satellite as it comes into view, and over time that satellite moves across the sky, and they switch to another satellite. This means the latency is highly variable as the distance changes, but at its lowest is much lower than a geostationary satellite since it is far closer.
I think they were talking about HughesNet the entire time. With the pricing, datacaps, and the latency lies. HughesNet does use geostationary satellites and has 600ms latency according to Wikipedia.
600ms is it's absolute best under perfect conditions.
When do you need faster ocean communication, besides luxury? Nobody is owned fast internet on an environment-destroying luxury cruiseship.
Because cruise ships are the only thing not on the mainland. Certainly no cargo ships, research vessels, island nations, or anything else.
Ships should suffice with a 100 kB/s connection which already existed before Starlink. You don't usually need to send tons of data.
Additionally, Starlink is currently only offered to a single island nation without submarine fibre-optic cable, the Easter Islands. Although they may get submarine fibre somewhere after 2026 anyways because that is when a new cable will be laid closeby.
Those speeds would be under ideal conditions, like sitting on land on a clear day with no weather.
It's not about the raw speed honestly, but the machine latency and stability of the signal. Traditional GEO satellites need a pretty steady platform to maintain connection. The mobile capable dishes are usually less capable than fixed position ones because they need to be less directional to maintain a signal while moving. But in say rougher seas, the movement will be vastly different than a boat just sitting on a lake.
Starlink can compensate for this better because it's designed to utilize multiple lower satellites simultaneously in view and a more omni-directional dish, alongside a signal that only needs to go to LEO. The difference between LEO and GEO or its is absolutely massive. The Starlink satellite constellation operates between 1/30 and 1/105 the distance of traditional GEO satellites. This means a latency of 25-35ms since they are so much lower. Lower latency will mean lower packet loss from instability which means higher throughout.
For a real world use case, look at the SpaceX landing ships. They originally used traditional GEO satellites for those video streams, and the motion and vibration from the rocket getting near caused total signal loss. Often signal loss for a white a while after the lending was over because the ship was still moving too much. After they switched to Starlink, I think I can remember maybe twice at the beginning where the signal cut for a second or so, and once they had a few launches to provide more consistent coverage and satellite redundancy, I can't even remember the last time we lost a signal during a landing.
Real time video streams are essentially the worst use case for traditional satellite communication, and the differences between the network types of night and day.