If it does actually work faster than fibre then some early high-paying customers could be high-frequency traders (HFT). Those folks already go to amazing length

If it does actually work faster than fibre then some early high-paying customers could be high-frequency traders (HFT). Those folks already go to amazing lengths and great expense to shave milliseconds off latency. They could get a huge early cash injection by auctioning off exclusive, prioritised access between certain locations.