"In the world of commercial speech, tobacco advertising bears the earmarks of an endangered species"

This quote by Jef I. Richards is referring to the truth that tobacco marketing is ending up being increasingly rare in the world of commercial speech. This is likely due to the reality that tobacco usage has actually become significantly stigmatized in recent years, and lots of federal governments have implemented limitations on the marketing of tobacco products. As an outcome, tobacco advertising is becoming less and less typical, and it is likely that it will continue to decline in the future. This quote works as a suggestion of the altering landscape of business speech, and how quickly it can be affected by public opinion and federal government guidelines.