老师好！There’s a mismatch between how many goods people want to buy, how many products and services producers can offer, and the price of the goods and services sold, which prompts an economic decline. 这句话中的how many是引导宾语从句做定语吗？people want to buy为什么不可以理解成goods的定语从句省略that/which，是只能理解成宾语从句吗？