The pros and cons of tip sharing are today much like our ancestral hunter gatherer society. Intra-tribe sharing is important for survival, but extra-tribe sharing is handled with care, as people are competing for territory, food and mates.
In ancient times, and more so in the industrial age and now the information age, information retrieval and task completion takes many steps and complex coordination of social and spacial factors. Task completion usually takes several linear or non-linear steps of perceiving a need, organizing of acquisition steps including prioritizing and coordinating the steps, acquisition or performance, and preservation of the knowledge. Tip sharing would necessitate further steps and effort in the process including dissemination or presentation as well as emotion, time and dynamic interactions.