I'm convinced something like this will happen one day, probably more than once. If Facebook is the "McDonald's" market segment (the widely popular, wildly unhealthy option), there will eventually be a segment of the market where there is unrelenting demand for a significantly healthier product. Like this: https://www.foodnetwork.com/restaurants/photos/healthy-fast-...

The "health food" of social media will be a product category where there will be market share to capture and whoever gets it right will be rewarded. Those users, like the health nuts of today, will know what there are looking for.