This article in 'Enterpreneur" discusses current "hottest" growing business sectors. Among the most "disruptive" categories, in my opinion, are the following four:
Decision Support: recommendation and discovery engines and platforms, particularly, when it comes to consumption and sharing of content, could be potentially discruptive for media companies. People increasingly choose to read and watch content that either is reflecting their interests (yep, not everyone watches ESPN channel) or recommended by someone they know and trust. Also, opening your content to sharing (as opposed to locking it behind the paywall) leads to increase in new audience members, and engagement of current members.
Collaborative Commerce: sharing and renting instead of buying, and loaning money from peers and crowdfunding your business and creative projects instead of turning to banks for credit could potentially turn to be discruptive for retail industry, manufactures, and banks.
Mobility: business and personal productivity tools continue to move to mobile and virtual access-from-anywhere platforms, and that could potentially discrupt commercial real estate industry. Why rent overpriced office when I can rent a cubicle in a downtown loft for much less (electricity, Internet and coffee are included), or work from home or public park?
Gamification: more businesses are adding gaming elements (like badges, leader boards and rewards) to their business practices in order to increase customer loyalty and engagement. This could potentially lead to new ways of measuring key customer metrics and conduct market research.