Ah, I find the book's fixation with class being about power in the production process, to be quite off the mark. Much of it is about tastes and interests and values. And even if it were solely about power, power comes from places other than one's role in the production process. For example, say the ATM repair guy (working class by the book's definition), happens to be highly educated and articulate, goes to city council meetings, is active in politics, and by virtue of his presentation skills, and contacts, has a lot of power in the town.
I say this as one who will soon be largely retired. So I am I out of the production process. But am I out of power in the zip code in which I live? Nope! I'm taking over! Well, not really, but you get the idea.