Even if the effects of individual interventions will arrive gradually, a comprehensive and wide-ranging plan can have a positive influence on expectations in the short term and so stimulate aggregate demand and a recovery in investment.
The point is to create favourable conditions for those who invest and create jobs in Italy not with subsidies but by furnishing suitable intangible infrastructure; not through the shadow economy but by cracking down on tax evasion. Society pays a high price for corruption and crime in general in the form of deteriorating civic life and lost economic development.