Not sure if you are in Europe, but in the US there are places where you could walk the width of Germany and see 100 houses. It does not serve to be technically correct here. Also, how would that work with boats / other vehicles and places without infrastructures?

Well, cable will not reach a warzone which is a rather pertinent use for a satellite communication system at present.

You'd need signal boosters at regular intervals, which need power... so now you're running multiple cables.

But you can't run them too close together as the power will induce noise in the data cable.

And after a long distance even the power needs boosting.

And to protect the cables, you'd need to bury them or put them on poles. Separately.

At a certain point, cable becomes the expensive option...

I know plent of places in my European country where cable does reach, but was made for landline phones and cannot carry any data for internet because its so far from the nearest distribution center. even wireless like microwave can't sustain more than a quality camera feed

The cost of a cable to a remote cabin is clearly not worth it either when you can just use a 4G antenna instead at a fraction of the cost. Ships won't even be able to reach 4G signals.

One broken cable can result in a city/town without internet. Speaking from experience.

Also satellites have other uses like GPS