For every thing Star Wars
cribbed from Star Trek
, it cribbed numerous other things from other genres.
managed to break out of the sci-fi niche and appeal to general audiences with record-breaking long lines. The original film was basically #1 for a whole year
. Star Trek
never came close to that sort of broad appeal, until JJTrek.
One of the other connotations of cashing in on something is that the thing riding the coattails is the lesser. That clearly wouldn't be the case here.