#2 Attracted more big names in the Wrestling business
In the end, professional wrestling is a part of the entertainment business. This means that in order to succeed, every company must try its best to get the fans invested in its product. One way to achieve this goal is by roping in well-established names within the industry. And Goldberg is a name familiar with the entire wrestling community.
Goldberg's arrival in AEW could have played a big role in turning heads towards the product. Additionally, having Golberg as a part of their roster would have made it easier for the promotion to rope in other big names in the wrestling business.
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While several legends including Bret Hart and Eric Bischoff have already appeared on AEW, Goldberg's presence would have assured numerous other big names making an appearance in the promotion, possibly resulting in them joining AEW in a full-time or part-time capacity.
There's no doubt that AEW's current roster is packed with the icons of tomorrow. However, having mainstream stars on the roster is a must to attract more fanfare.