Venom is a movie that had so much potential, unfortunately it suffers from the dreadful "Hollywood" basic structure.
This movie could have gave us a better perspective on the life of a villain. Sadly, the writers went down the safer road and made the well known villain into a hero. Yeah, let that sink in for a moment.
If Sony wanted another hero movie why not make another Spiderman film? What's the point of making Venom the protagonist if he's just going to save the day? We have Spiderman for that.
I personally would have preferred to see Venom go on a rampage across the city eating anyone in sight including Anne. It would have made much more sense that way. He is a villain after all, not a hero.