True. We like to say that Lemonade is the oldest new idea! I think that's what the sharing economy is all about, using technology to revive modes of social interaction that used to be commonplace.
Thats a great way of looking at the sharing economy. Once upon a time I asked my neighbor for a cup of sugar and they obliged, if even begrudgingly. Nowadays I pay a task rabbit $35 to get me a cup of sugar.