In most of these cases, the technical decisions impact the commercial. If writing megabytes were "technically" cheaper than reading, you can either choose to p

In most of these cases, the technical decisions impact the commercial. If writing megabytes were "technically" cheaper than reading, you can either choose to pass that cost onto customers or simplify the pricing model assuming some read-to-write ratio. They didn't just set the prices (or the pricing model) to amuse themselves. Disclaimer: I work on Compute Engine.