What a terrible take.
There is a huge market even just in the US for Starlink. The worldwide market for people who need internet access in remote places is positively gigantic.
Additionally, Starlink could be hugely profitable if they exclusively sold access to ships and aircraft. You'll never be able to run fiber to those.
They can indeed reasonably charge $99/month to many many millions worldwide who don't have any options for low latency, high speed internet access. You vastly underestimate the need for the service.
On the one hand you have a technology product that’s only relevant to rural consumers. Nine out of ten people have cable already.
On the other hand your margins are amazing because all you do is fly little boxes over everyone’s heads launched with government subsidized rockets. No linemen or plant-hire or contractors to sap your profits.
The biggest threat would be commoditized terrestrial wifi / 5G. The more cell service competition there is, the smaller the market for satellite, until it’s only applicable to 1% of the population (and the poorest 1% at that.)