The points made in the thread "Why do so many people want Transformers 6 from Michael Bay" are many and varied with the relative merits (or lack of) of the Bayverse, whether Transformers movies "should" carry sophisticated themes, the faithfulness of the designs, and whether or not Bayverse fans count as real fans. However, there's a central point that seems to be missing; not why do so many people want a sixth outing from the Bayverse, it's why did we not get a sixth outing from the Bayverse? It's AOE where we see things begin to fall apart. As @Autobot Burnout has said repeatedly, AOE was only successful because it was marketed heavily in China - in America, the domestic box office was almost $100 million lower than DOTM, before it was beaten by Dawn of the Planet of the Apes. In the UK, where I live, it lasted a week at the top spot, before Dawn of the Planet of the Apes and How To Train Your Dragon 2 stole its thunder; the latter of which had come out two weeks before it. The reason for that? The gross, brainless humour and gross, brainless violence of the previous Bayverse instalments turned family audiences, including adult fans hoping to introduce their children to the franchise, off. If you're a parent with young kids, why see a film where characters are brutally killed on screen and there's jokes about underage sex, when you could see How To Train Your Dragon 2 instead? Your child will not be exposed to inappropriate topics, the violence isn't overly gory and there's a more compelling story overall. For parents with older kids, Dawn of the Planet of the Apes offered a more compelling, character-driven film, which tells a story with deep and sophisticated themes. In August, both demographics could go and see Guardians of the Galaxy, which has enough action to appeal to older kids, but has enough bright colours and funny dialogue to keep younger kids entertained. These three films, in most non-China markets, did just as well as AOE - in fact, in some markets, they actually did better than AOE. AOE survived because it pandered to the Chinese market - unfortunately, they couldn't pull that off twice. The overt sexualisation of the female characters was another issue that turned off both family and female audiences from the film - I will compare my experiences with the first and last Bayverse films, a decade apart. When I was ten and the first Transformers came out, all the girls in my class went to see it and they enjoyed it just as much as the boys did. To us, it was a unigendered thing; no matter male or female, if you were in the Year 5/6 Class of '07 at Great Crosby Catholic Primary School, you'd seen Transformers. A decade later, when my older sister and I went to see TLK, she was the only woman in the room - and we had to change seats because some arsehole fourteen-year-olds behind us were implying that my sister was an [awful slur for transsexuals] because she was a woman going to see a Transformers movie. TL;DR: The Bayverse failed because, over time, it gradually alienated families and female audiences.