So what about the person who runs batch file transfers and only cares about throughput and cares less about latency? Maybe we should just optimize the whole internet to your workload and at least one person will be happy.
ISPs optimize the network for benchmarks and common internet users do not even know "latency" exists as a concept. All the average consumer bases their purchase on is the average throughput. Only later do they find out about latency when their system because intermittently lagging.