The difference between information industry and traditional industry

The key to distinguishing the network industry from the traditional industry is that the network industry does not lose material form every time it sells a commodity, which is an important reason why the world is optimistic about the network industry, and it can completely regard sales as profits. However, in the past, the value of network enterprises was overestimated, and the turnover has at least doubled or even doubled. At present, the valuation is ten times or five times, and the change of valuation method will inevitably lead to a sharp drop in the share price of listed Internet companies.