A better version of humanity wouldn't be risking anything by sharing excessively and would get all the benefits of transparency. The humanity of reality is still plagued with bad actors who would throw away everyone's future, throw away civility, seek out despotic rule, etc. We have an elaborate system of incentives and disincentives we rely on to maintain good faith participation in society, and despite our best efforts that system is flawed and also fragile enough that it could worsen dramatically. The way we are centralizing wealth, data, knowledge and power right now is really dangerous in my opinion.