Came across this from an FAA pilot exam training program:
"Question: May a recreational pilot act as pilot in command of an aircraft in furtherance of a business?
ANSWER: No, it is not allowed.
Recreational pilots may not act as pilot in command of an aircraft that is used in furtherance of a business. There is no exception." (Bolding mine, DB)"
Note the phrase "furtherance of a business", that includes a plethora of things such as advertising, product demonstrations and even product placement or use in a movie or TV show.
While this is referring to private vs commercial manned aircraft, this could be applied (via precedent) to differentiate commercial vs recreational as it pertains to (s)UAS uses, pilots and vehicles.