Toys R Us is closing its doors for good. The toy emporium that Charles P. Lazarus envisioned has been reduced to dusty floors and empty shelves.Much has been said about the demise of the toy empire, which announced its plan to liquidate. There have been fingers pointed at corporate raiders, Amazon and big-box stores. All contributed to its undoing.Ultimately, though, Toys R Us' collapse is a story of loyalty run dry. The store in its early days fostered devotion from customers and toymakers. In the end, it lost hold on both.