The success – and subsequent bursting – of the dotcom bubble is well-documented. A business bubble such as that is created when speculative investors believe in an over-hyped product that simply cannot deliver what its proponents say it will. Rather than steady, sustainable commercial growth which supports the long term, it can lead to business failure and bankruptcy. That is then followed by a market shake-down in which only the strongest survive: hence the domination of the big dotcom players post-bubble, such as Google and Amazon.