Who is a PMC lib, who is working class? It's obviously not office/factory anymore, most people don't work in factories, right? Why was the focus in communist thought on factories and not, servants, drivers, nannies, maids, cooks and secretaries of the rich – they seem to be easy to radicalise because they see the shittiness and incompetence of the rich day to day, and more importantly are most needing of a union because of the likelihood of abuse by their bosses.
Was it because they don't exactly work together? Can't exactly chat and radicalise? Hard to strike? How do we bring gig economy workers together when the same barriers apply to radicalise them?
Also being boourgeoise isn't inherently bad, we welcome class traitors. You're putting a lot of judgement on what is simply a marxist definition of which class your labor applies.