A former employee of Disney's games business told the publication that due to the huge financial investment, Infinity carries "a tremendous amount of pressure to be a hit".
If Infinity flops, it's suggested Disney would have to re-evaluate its videogame strategy and possibly shift to an all-licensing model. EA currently has the Star Wars license.
Disney Infinity goes on sale in North America this weekend and in Europe next week.
The Skylanders-esque title is described as an "interactive gaming platform" which allows players to explore an open-world sandbox, with new characters and content added via the purchase of Disney Infinity action figures.
Speaking earlier this year, Disney CEO Robert Iger acknowledged the risk involved with such an ambitious project, stating: "If Infinity does well, it bodes very well for the bottom line of this unit. If it doesn't do well, the opposite will be the case."