No, change is not always good for a business. There are times when change is either a bad idea in general and other times when specific changes are poorly done. Change is often good, but not always.
Change is often a good thing for a business. Businesses have to change to keep up with new technologies. They have to change as customer tastes change. If a business never changes it can fall behind its competitors and lose profitability.
However, this does not mean that all change is always good. Sometimes, a firm does not need to change at a given time. A firm can be on top of its market and might not have any current problems. It might want to plan for eventual change, but it should not necessarily change if nothing is wrong at the present. At other times, change might be needed, but it really has to be the right kind of change. For example, when Coca-Cola tried to roll out “New Coke” in the 1980s, it was a complete disaster because that was not something that the market wanted.
Thus, while change is necessary for businesses in the long term, that does not mean that it is always good to make specific changes.