A greater focus on enhancing the overall cabin experience, taking into account all factors which affect passenger comfort, far beyond issues of seat space and pitch, will make the cabin a significantly more pleasant space in the very near term.
Biking is healthier, more enjoyable and more reliable than most other forms of public transportation; it is also changing people's relationship with their busy urban cities.
Airbnb, with its roughly $24.5 billion valuation, would likely be too big for most of the online travel agencies to acquire but if they are forced to enter the sharing economy in a bigger way several years from now they always have the resources to buy their way in.