Excessive expansion, especially expansion that is not sustainable(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "overexpansion" in a sentence
"If there is a gradual "overexpansion" in a sector, then this is just one of the elements that is causing the usual structural unemployment."
"The number of wind turbine manufacturers has increased in China due to strong support from the central government, but the country recently implemented measures to curb overexpansion."
"We saw short-term stimulus packages, temporary tax rebates or surcharges, go-stop monetary policy with inflationary overexpansion followed by severe contraction, wage-and-price guidelines and controls."