Government can not create wealth. Government can transfer wealth; government can destroy wealth; government can, on its better days, create an environment and incentives so that individuals can create wealth. But Government itself can not create wealth.
When overall demand is low, Government should make investments, especially in areas where the costs are lower due to excess capacity. Tax shifts to later generations make no sense when demand is low. People are already deferring consumption; government should lean in the other direction. And do not overestimate what government can do; it can not "restart" the economy; it can not fully make up for private demand. The idea that bankers will suddenly do their jobs better because they are now government employees --well I can't politely describe what that is.