Look at it as Ecology and Phase Space. Ecology shows us there are lots of different creatures/behaviors around a watering hole or nutrient site. Through the life cycle of the site and changing nutrient levels, different behaviors rise and fall. Intially site is found by curiousity/explorers. There is enough to go around. Trust is not an issue. Nothing exists yet to destabilze the system. As more life starts getting drawn in we see growth of parasitic and opportunistic behaviors. There is no ecosystem on earth that doesnt have them. As numbers grow Stability alerts start slowing growing in volume. Alarmists/moralists behavior grows. This feeds into status and reputationally sensitive behavior growth that has Stability restoration capacity. Main point being at different Phases trust is not a requirement.