1) The document discusses how maintaining or increasing marketing spend during an economic recession can provide opportunities for gaining market share from competitors who cut back.
2) It presents evidence that companies who increased marketing during recessions saw higher sales growth in subsequent years compared to those who cut back. Maintaining share of voice can directly impact maintaining market share.
3) The document warns that cutting marketing now can cause long-term damage due to loss of market share and profits in future years after the recession ends.