I think most managers prefer the status quo; why wouldn't they? Charitably, you can think of it as an assumption on the manager's side that you're fine with the way things are, because you haven't said anything. Similar things can be said about salary.

I don't know why people assume managers are interested in increasing salaries and distributing promotions. Every incentive and preference works against those things. If you want change, you have to ask for it.

From my experience it is futile to ask for any meaningful salary changes. Bands are usually fixed. Unless you're severely underpaid, they won't increase your salary by much. There are only two ways to increase your salary: leave for bigger salary, or threaten to leave and stay for bigger salary.

That depends on the company. Many companies rate their managers on how well they do useful things for their people.