While I understand this will have superb latency, it's still not clear to me why would Starlink be cheaper than existing VSAT. VSAT is quite expensive (starting from ~thousand dollars per month): http://www.melatnetworks.com/price-list.asp

Or those, with prices around 50usd/gb: https://www.vsat-systems.com/service-offerings/VAR-VNO-Deale...

Even if Starlink is 10x cheaper than existing VSAT it does not come even close to LTE cost. And we have 5g on the horizon.