What does the task of nichers involve?

What does the task of nichers involve?

a.Creating niches: The nichers have to continuously work upon creating new niches in the market as the old ones may phase out from the market eg. a designer may have to continuously work upon new designs as the old ones may quickly phase out from the market.

b.Expanding niches: eg. a fashion designer may expand his niche market to cosmetics as well which Gucci and Armani have been successful at.

c.Protecting niches:copyrights, patents, trademarks are used to protect the niches from any such unauthorised use or copying of the same.