The phrase "always centered on" is correct and usable in written English.
It can be used to indicate that something consistently focuses on a particular subject or theme.
Example: "The discussion was always centered on the importance of teamwork in achieving success."
Alternatives: "consistently focused on" or "perpetually revolving around".
Although the military said that the security police were merely defending the Interior Ministry from attack, the fighting had always centered on that one block leading to the square, while other more direct routes to the ministry remained open, supporting the assertions of many protesters that the security forces were deliberately provoking the violence to destabilize the elections.
His book is solid, forceful, occasionally speechy and always centered on this thought expressed by one of its characters: "Shame is of no use unless one is prepared to learn from it".
Mr. Shepard's work has almost always centered on twosomes.
The Wisconsin brand has always centered on integrity.
Tragic theater, from Oedipus onward, has always centered on that moment when time is up.
One way or another, Tim's conversation, Gerald now remembered, was always centered on youth.
Conservation will always center on well-protected parks, free of major human disturbance and supported by tourist dollars.
I am also not suggesting that family discussions always center on money.
The Jessup competition always centers on a hypothetical legal dispute between nations; this year's "Jessup Problem" focused on maritime development, and teams argued before a panel of judges posing as the International Court of Justice.
@dmscott asks: #AskObama Tech & knowledge industries are thriving, yet jobs discussion always centers on manufacturing.
Edge Magazine also complained that even when there were two players playing, the camera would always center on Scarygirl, even if that meant that Bunnyguru wound up off screen.
