The very same reason the oligarchies in south america finance the left radical parties. They see socialism as an ally, they view the middle class as their true threat. After all, you might marry their daughters. Elites don’t like a crowded top, otherwise they wouldn’t be elites.
Precisely. The very rich (and the large corporations) view socialism as an ally because it stifles competition!
Socialism keeps the hoi-polloi in their place. And small businesses small.
Not for nothing did Marx and Lenin identify their primary enemy as "the bourgoisie".