I find it more plausible that tech billionaires are just more likely, as a group, to believe in technocrat rule, etc. than are people who are not tech billionaires. Being an immigrant from Communist countries or a child of such immigrants is just as likely or more likely to make one despise top-down solutions as it is to make one favor them. People with such backgrounds have direct experience of the sorts of problems that arise from heavy-handed government involvement in society. Based on what I've seen, I speculate that financially successful immigrants from Communist countries actually tend, as a group, to favor hands-off government.