the market and demand is different for each product.
Demand for one of them going down doesn't mean demand for another
product is down. It all depends on the direction, diversification
and goals of the company.
For example, no matter how well or bad the economy is doing,
whenever you buy a computer, you will need to buy RAM. Whenever you
buy a handphone, there is an embedded IC chip. Whenever you need to
store things on a thumbdrive, there is always flash
technology.
Almost every industry will require some sort of semiconductor
products nowadays. It is almost like one of the pillars of any
industry. How many companies can survive without a computer?