Aliens and T2 were definitely anti-corporate.
The Abyss was definitely anti-military (but the love story was great).
True Lies was alright, but don’t count on anyone in Hollywood ever daring to make a movie with A-rab bad guys ever again. Hee, Hee! I’ll bet ol’ Jim wakes up in a sweat every other night for fear that he may be fatwa’d for his “Crimson Jihad” baddies even now.
Titanic wasn’t political but it was definitely obsessed with class warfare (rich people bad, poor people, good).
The Corporate ‘Man’ holding people back has been a fiction mainstay for decades upon decades. Cameron is simple minded enough in his storytelling that he probably just uses it as a template without thinking about the political implications.