We have a computer repair shop in my town that does not do computer repair. Ask them if they can fix something, the answer is always "we don't do that." Even simple shit like screen repair on cell phones, which they have signs on their windows saying they do. "We don't do that." My landlord owns the local radio station, he says they've tried to get them to do computer repair for them. "we don't do that." Factory I worked out tried them. "We don't do that" Friend needed keyboard repaired on laptop. "We don't do that" I'm so convinced at this point that whenever I meet a local business owner I ask them who they use for any computer repair, and it's always the same answer as to why they don't use this one place, that's a big store, in the only strip mall in town. They only have one dude in the store, who's constantly got some right wing radio or YouTuber on. There's no other employees, no reasonable way they're affording the outrageous rent for such prime real estate. There aren't many businesses in this town, and almost all of them use someone from the bigger city 35 minutes away
On top of all of that, there used to be a Mexican grocery store in town (in the same parking lot, in fact) that never actually sold any food, and would always say they were closed if you walked in. They got shut down because they were apparently part of a group that was bringing in undocumented workers. The dude who owns the computer repair place is the cousin of the guy who owned the Mexican grocery store.
And depending on the situation, those are also laborers. Management has a role to play in any decently sized firm, regardless of it's structure or ideology. The argument here has little to nothing to do with management, it has to do with ownership. Should the employees collectively own their workplace, or should a single entity or group of shareholders own the workplace?
Hell, even the IWW let me sign up as a manager, though they technically have a "no bosses" rule.