In that scenario, the AI owners become rentiers - able to charge as much as the market will bear for brokerage - and everyone else gets to offer their services via said brokerages, which charge the customer the most they can bear, and pay the worker the least.

Any economy of scale - which is, in a way, what allows knowledge economies to exist at all - will accrue to the middleman.

Good news for those able to master manual, craft skills to a degree most cannot. High-end tradespeople, specialist installation technicians and so on. Bad news for everyone else besides rentiers.