The 80% cost of satellites is in large part optimizing them for infrequent high cost launches. Bringing the cost of launch down means we can launch a lot more stuff and that stuff doesn't have to built to the same quality as e.g. the James Webb or even an Intelsat GEO satellite.

This kind of launch capacity is going to change the entire economics of building stuff for space. https://caseyhandmer.wordpress.com/2021/10/28/starship-is-st... has some interesting writing on this.