Excessive investment, especially in one particular area(noun)
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Use "overinvestment" in a sentence
"He created this movie with dancer Jean-Baptiste André as a focus on the "overinvestment" of urban space."
"This willful blindness has caused many economists, including the most recent Nobel laureate, Paul Krugman, to misinterpret the Austrian theory of the business cycle as a theory of "overinvestment," which it definitely is not."
"Relying on the framework of the Solow growth model, mainstream economists usually interpret the Austrian theory as one of "overinvestment" during the boom."