"provided entirely by one worker" : this is like admitting that the problem comes from injecting hierarchy into the system, which in a free market can only happen voluntarily if both parties benefit from it, but in a statist society is imposed or restricted by the economy planners through regulation.
"essentially a matchmaking service where there is very low [switching] friction" : every market is a matchmaking service between the seller and the buyer, and the way to sustain low friction is to have as little regulation as possible (you will see the Uber/Lyft_fuelled prosperity (e.g. happy workers) disappear if the government steps in, and it will decrease wages to the point that it will be equal to the taxi market which is heavily regulated)
"which is not true in many other industries" : how can we know? "many other industries" are mostly regulated, and heavily so.You're saying deregulation doesn't work in other industries because they're already regulated.
The problem of workers and factories, as far as I know, is solved by unions. However, historically governments have regulated unions as well. Cf. Bangladeshi garment workers, their poor working conditions and their torturing of labor organizers.