Excess of tertiary industry may mean that the supply of one or more industries in the three industries exceeds the demand. For example, excessive agricultural production (primary production) may lead to the supply of agricultural products exceeding market demand, which may lead to a decline in prices.
Similarly, if the agricultural product processing industry (secondary production) or agricultural product market service industry (tertiary production) is surplus, it may also lead to oversupply of related products or services, thus affecting the healthy development of prices and industries.