You have an intuitive "expectation" of a certain image quality and data cadence. Your expectations, though, are based only on intuition from consumer electroni

You have an intuitive "expectation" of a certain image quality and data cadence. Your expectations, though, are based only on intuition from consumer electronics, wall outlets, and your living room. In other words, they are irrelevant. You need to think about the fundamental physical limitations (mass, distance, power) and work backward from these constraints. That's how engineering works. For example, the "bandwidth" of the iPhone you refer to would be zero. It's battery would be inoperable at 4 degrees Kelvin, and it has no directional antenna, and it would not know where to point it even if it did.