Earth Transport Starship and Falcon

Falcon-9 boosters have landed and been recovered 398 times and counting. Which brings up my question, Why can’t falcon 9 be used for earth transport? Don’t get me wrong, this isnt a post hating on starship but at what point is earth transport really feasible with such a new vehicle. Im sure someone has thought of this before so please point me in the right direction if I’m missing something.

Thank you guys