Philip Kotler gives the example of the brick industry, which is about as close to being a commodity business as is possible.

ECONOMIST: Idea

Recent years have brought change to the area s traditional industry, with the decline of coal and brick-making.

BBC: NEWS | VOTE 2003 | Wrexham

Gerstein notes that the industry is dealing with its fair share of challenges, as customers increasingly avoid brick-and-mortar establishments in favor of shopping online.

FORBES: You'll Find A Sports Memorabilia Moneymaker Micro-Cap In Dreams