I remember reading somewhere that literally most of the satellites orbiting earth are Starlink satellites. As in, more than half of all satellites are Starlink.
Obviously that statistic does not mean they have a successful business, that there's enough of a market, etc etc.
But one can imagine the types of services you can supply in just a few years to customers when you have by far the largest satellite constellation in the sky, with global coverage, and the ability to launch dozens of new satellites at low cost.