portion left for net neutrality

I think it’s worth pointing out that the concept you’re describing doesn’t make any sense to begin with because the act of partitioning is already a violation of net neutrality in and of itself. If any part of the spectrum is prioritized, the neutrality is gone and there’s nothing left to be whittled. There’s no such thing as “half-neutral” or “partially neutral” or “neutral with exceptions” – anything less than completely 100% neutral is simply “not neutral.”