@lupyuen That entire article is predicated on only a few facts, but just treating the traffic control, it can not only be mediated by over-selling, but better managed by using things like HTB and stochastic fairness to maximize throughput and and still give a *minimum* guaranteed bandwidth to customers. And it's not carved in stone that every customer should get 100mbits. That's quite a lot for most people really. Easy to get an order of magnitude difference and make 30 billion $ plausible.