While I do agree these people exist, most people are some mixture of benefiting from, and being harmed by the status quo. To erode support for a mode of production takes both fighting those who are directly against your class interests, and convincing the majority of people that their class interests align with your actions. Often those who feel the most precarity under the current system are it’s most ardent defenders, simply because their afraid of loosing what little status they have eked out for themselves.

Corbyn was sabotaged both by people who rightly saw him as a threat, and by those who didn’t see the benefit he could bring them.