Not necessarily, it could be some element of the Netflix architecture that due to their size and/or design trade-offs has taken longer / is harder to eliminate

Not necessarily, it could be some element of the Netflix architecture that due to their size and/or design trade-offs has taken longer / is harder to eliminate than it would be for others. Other services, like Twilio, have come through several of these major problems with US-EAST generally unscathed while Netflix has had issues repeatedly.