underinvestment
noun[U]
FINANCEuk/ˌʌndərɪnˈvestmənt/usasituationin which lessmoneyisspenton something over alongperiodoftimethan isneeded:
Theseproblemsare theresultofdecadesofunderinvestment intherailways.
Publicinfrastructureissufferingfromchronicunderinvestment.