I've never been a fan of console exclusivity, but I'm not sure the "It was held back by being an exclusive" logic holds here given it literally wouldn't have existed if it wasn't. There are cases where something is limited, not by trying to control something, but because it's the only way it can come into being. There is still an argument for saying MS could have sold the game on other platforms if they really wanted to, but it sounds like the idea specifically came out of a need to fill an empty space in Microsoft's own gaming library, then got caught up in the timing of needing exclusive launch titles for the console.
Microsoft's own initiative for trying to unify their console and PC platforms wasn't a thing when the game launched either. Once they got serious about trying to build a unified platform, that's when the PC version became a possibility. I'm glad they were open enough to the idea of also spinning off a Steam version, but I'm a little surprised they were willing to. Good thing they did though, because it's the only version that I can play.
In the end, the only reason the game is what it is, is because everyone and every choice made stacked and slowly built what it is. If they hired a different studio, it wouldn't be the same game with the same artwork, and have totally different music. If they hadn't been forced to switch developers, Hisako wouldn't exists.
The game has a good story, and is very successful from a lot of points of view. It don't see any reason to get too caught up in what could have been, because if anything different happened what likely would have been, would be a much lesser thing.