Commercial enterprise can be an escapade (9)
I believe the answer is:
adventure
'an escapade' is the definition.
(synonyms)
'commercial enterprise' is the wordplay.
'commercial' becomes 'ad' (abbreviation for advertisement).
'enterprise' becomes 'venture' (I've seen this before).
'ad'+'venture'='ADVENTURE'
'can be' acts as a link.
(Other definitions for adventure that I've seen before include "Risky or exciting experience" , "Exciting series of events" , "Risk" , "speculation" , "The thrill" .)