When the economy is bad? What kind of job should one pursue?

The food service industry, being a non-essential consumption, is the first to be hit when the economy declines, so operational flexibility is really crucial. Adjusting the menu appropriately or cultivating a loyal customer base might help mitigate the impact. Has your friend considered adjusting their cost structure at all?

Crane games were popular before, but now maybe group buying stores are trending. Several group buying stores have popped up in the city center in the past two years.