In the decades to come, it seems likely that the platform model will be applied—or at least tested—in virtually every market for labor and professional services. How will this trend impact the service industries—not to mention the working lives of hundreds of millions of people?

One likely result will be an even greater stratification of wealth, power, and prestige among service providers. Routine and standardized tasks will move to online platforms, where an army of relatively low-paid, self-employed professionals will be available to handle them. Meanwhile, the world’s great law firms, medical centers, consulting partnerships, and accounting practices will not vanish, but their relative size and importance will shrink as much of the work they used to do migrates to platforms that can provide comparable services at a fraction of the cost and with far greater convenience. A surviving handful of world-class experts will increasingly focus on a tiny subset of the most highly specialized and challenging assignments, which they can tackle from anywhere in the world using online tools. Thus, at the very highest level of professional expertise, winner-take-all markets are likely to emerge, with (say) two dozen internationally renowned attorneys competing for the splashiest and most lucrative cases anywhere on the globe.