Update: I still agree with everything I said in my previous review, but there is a more generous reading of the story that I thought of. In the very first cutscene of the game, Harry says, "If this doesn't work, take me out." In reference to the symbiote.

We know what happens at the end though. Harry's chances of coming out of his coma are slim, but Norman decides to keep him alive anyway. He can't deal with the grief of permanently losing his son, so he keeps his life in limbo.

If you read it this way, the ending has something much more interesting to say. In everyone's attempts to keep Harry alive, he ended up right back where he started. He just traded floating in a tank for being trapped on a hospital bed forever.