>>17268478Because the Big Show is the biggest wasted talent in the history of pro wrestling
Here you have a true giant, an actual heir to Andre to the point that most people think he's Andre's son without you even having to acknowledge the rumors.
And instead of making him an attraction that comes in, dominates wrestling, and then leaves for a while like he did with Andre, Vince decides to immediately make him just another guy (excepting his debut). Now, Big Show also became lazy and fat but I don't really blame him. He was never used like a true giant should be used.
The reason Heyman booked him strong is because he always thought Show was salvageable and Heyman's actually a good booker.