Not so idle question: How many miles of fiber can be laid for the cost of a satellite launch?
A Falcon 9 vehicle is $67milllion USD in 2025 money.
https://spacenexus.us/guide/space-launch-cost-comparison
Now, trenching fiber varies, a lot. Depending on if you are going through virgin rural farmland, or through a heavily urbanized area where you have to jackhammer out concrete. From maybe $20,000/mile in Nowhere... to $200,000/mile in downtown anywhere. So anywhere from 3,400 miles of fiber to 335 miles for the cost of one Falcon 9.
Now 3,400 miles
sounds like a lot of miles of fiber. But, for reference, my rather average US city of 300,000 people that has sprawled over 80 sq miles...
has 2,700 miles of roads to service all the R1 housing stock that is most of the developed land. If you're going to do fiber-to-home to every house, it'll take probably 3,000 miles of fiber and trenching**
**Sidenote, my city DOES have fiber-to-home to every R1 house in the city. That is permanently dark and will never be used. Before Time Warner got bought by Spectrum...they bought a State law making it illegal for a public utility to compete in the same "market" as a private corporation. So our municipal fiber system is permanently illegal.