While demand-side latency is being solved, supply infrastructure must be prepared. Fast delivery of nothing is still nothing. GPU quotas - not GPU speed - determine whether creators wait 30 seconds or 3 hours. This is the third constraint in the sequence - invest in it now so it doesn't become a bottleneck when protocol migration completes.
Once latency is validated as the demand constraint, protocol choice determines the physics floor. This is the second constraint - and it's a one-time decision with 3-year lock-in.
Users abandon before experiencing content quality. No amount of supply-side optimization matters. Latency kills demand and gates every downstream constraint. Analysis based on Duolingo's business model and scale trajectory.