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In page Sharing economy:

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At the individual transaction level, the removal of a higher overhead business intermediary (say a taxi company) with a lower cost technology platform helps reduce the cost of the transaction for the customer while also providing an opportunity for additional suppliers to compete for the business, further reducing costs.[2] Consumers can then spend more on other goods and services, stimulating demand and production in other parts of the economy. Classical economics argues that innovation that lowers the cost of goods and services represents a net economic benefit overall. However, like many new technologies and business innovations, this trend is disruptive to existing business models and presents challenges for governments and regulators.[6]