I hear this a lot, but can you really say that you're consistently saturating a 1Gbps line for netcode or 6+ Gbps nvme for disk data? In my experience this doesn't really happen with code that isn't intentionally designed to minimize unnecessary work.
A lot of slow parsing tends to get grouped in with io, and this is where python can be most limiting.
A lot of slow parsing tends to get grouped in with io, and this is where python can be most limiting.