Link budget cuts both ways. If your user terminal sucks, you can compensate somewhat - by building a larger, beefier satellite that has better antenna direction

Link budget cuts both ways. If your user terminal sucks, you can compensate somewhat - by building a larger, beefier satellite that has better antenna directionality and pumps out more transmission juice, and throwing the data rate under the bus. This is how it's done now. Having a terminal that doesn't suck puts less strain on the satellite side and, thus, scales better. But for emergencies and serving middle of nowhere, "direct to cell" makes sense.