it certainly hasn't out lived itself. give it a good feed formulated for camellias. If it was too dry or you had an early frost in the late summer/early autumn that would account for the lack of flowers as that is when the buds are formed. if there is any dead wood prune that out but unless it is too big for its space it doesn't need pruning.

Thanks Seaburngirl. That's helpful and encouraging! I'll get some camellia feed for him--well, not for him, exactly, but for his tree!