Consider where we are on the technology curve. We're a few years into general purpose, networked computers being in everyone's pockets. We're a few years away from those computers being capable of coordinating interactions between their owners without middlemen using distributed consensus systems like Ethereum. Once that technology is mature, this concern about whether the workers are employees of the middleman will be moot.

Society desires the ability to offer and purchase services from individuals on demand. These workers work for other individuals. The fact that there are companies involved is a historical quirk that we shouldn't focus our policies on. We need policies that support individuals offering their services to other individuals, so employer-oriented policies are a distraction.