Cheaper but typically a longer route which translates to higher latency. As a standard internet user the difference between 20ms and 24ms might not matter to y

Cheaper but typically a longer route which translates to higher latency. As a standard internet user the difference between 20ms and 24ms might not matter to you but when selling enterprise services, especially around financial institutions (but not exclusively) that 4ms matters. Often it matters enough that the business case for terrestrial cable starts to make sense.