Commercial suggested as an alternative, gets a negative response from German philosopher (6)
I believe the answer is:
adorno
'response from german philosopher' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'commercial suggested as an alternative gets a negative' is the wordplay.
I cannot really see how this works, but
'commercial' could be 'ad' (abbreviation for advertisement) and 'ad' is found within the answer.
'alternative' could be 'or' and 'or' is found within the answer.
'negative' could be 'no' (no is a kind of negative) and 'no' is present in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?