I'm lame when it comes to these kinds of questions, because I'd want to know more.
Again, I think there's a lot of generalization. There are plenty of Millennials who happily integrate themselves into the "typical" corporate culture.
And I also think Millennials are coming into a working world that's very different from their parents. Nowadays, I think, there's a lot less loyalty between employee and employer. Employees play the field and some switch jobs every 18 months to boost their salaries, and employers cut swaths of employees at a moment's notice.
So some Millennials, I think, are looking at their relationships with their employers in a different light.