by and large, subversive intent does not imply subversive results. hence the frequent success of the system at recuperating actions and trends that may well have had subversive intent.
for sure detournment can have subversive intent. but results...?
as annoying as i find kalle lasn and his project, adbusters has done some of the best advertising detournments i have ever seen, at least back 10-15 years ago they did (haven't seen it in ages). after seeing their trajectory over the years, though, i am not even sure the intent was truly subversive.