The star link network is actually remarkably cost effective in getting internet access to rural areas. There's a reason that these areas still have poor connectivity: it's just not cost effective for anyone to build land based infrastructure there.

SpaceX spend a few billions on StarLink. But if you look at how much network operators have spent over the years on cables, base stations, etc. it's not all that much for a network that offers high bandwidth access all over the planet.

Adding 100K more satellites is going to make Star Link a direct competitor to many of these operators.