Enjoy the early adopter moment. Even if they keep increasing the numbers, they will probably move those new satellites in a much wider net to cover more subscribers the second they must show a profit.
So the opposite is true. They’re likely to massively increase the number of satellites.
If you want to argue the per user bandwidth might be different than for early users, that’s somewhat more plausible. But the number of satellites will increase. They can’t actually significantly change the inclination of the satellites once launched as it takes an insane amount of propellant, and even for solar electric thrusters, so your concern about them moving the satellites to other orbits is very unlikely.
The only way to make a wider net whilst simultaneously adding satellites would be to raise the altitude of the satellites, which I am fairly certain is not possible for the existing satellites.