

We never actually solved the telephone line problem globally. This is a global issue, not a US issue or western country issue. Some countries just skipped right over it in areas it was simple to do and went straight to wireless after struggling for decades without connectivity, but still the rural areas rely on some form of satellite internet.
Again, you seem to be worried about these launches, but it will be less than 1 day of transatlantic flights each year to maintain the network. The fuel is methane and oxygen which as I said only has CO2 as a pollutant. If that’s the cost to provide global internet coverage that’s nothing. It’s more for Falcon 9, but its absolutely tiny on the scale of what we do and what it provides.
The unknown externalities are what does burning things up in the atmosphere do, and that is something we don’t truly have an answer today. SpaceX already solved the throwing away 1st stages each launch which every other launch provider does, and are close to solving the 2nd stage as well. If they can solve the 2nd stage, then we really are only talking about whatever damage the burned up satellites do. In the meantime, they burn up the 2nd stages as well as the satellites which everyone else also does, or leave it in a dead orbit.
In addition to the consumers using it, they’ve been making bank on commercial sales like airlines and cruiseships. But ya, it’s a money maker even accounting for having to renew the constellation every 5 years.