A new study by Vision Critical shows how the emerging "collaborative economy" is satisfying the need for convenience and price that ownership cannot. If you think that Uber and Airbnb are the only collaborative economy companies to care about, read the examples in this report and you'll see that even established firms can use collaboration to help service customers.
When asked their reasons for using collaborative services, respondents said convenience first:

For healthcare marketers, look to your patient advocacy work as your first place to implement collaborative efforts. Peer-to-peer support, enabled by a third party, can be very valuable for patients and caregivers. There are opportunities for collaboration in HCP circles as well.
Source: Vision Critical