My theory is they've so heavily optimized for static content and distributing content on edge nodes that they were probably poorly setup for live-streaming.

This, I feel bad for their engineers who were told every bonus would be a matter of how low can they get the cost-per-GB of transferred data, leading to the glorious Netflix-in-a-box (https://openconnect.netflix.com/deploymentguide.pdf) and then management casually asks for a live show with a wildly different set of guarantee requirements.

Its because they use medium-hard leetcode instead of hard. I suggest 8 rounds instead of 4

Surely more whiteboard questions are the key? Reversing a binary tree is so last year, they should make candidates reverse an octree.

someone's going to have to reverse a linked list of subscriptions.