I mean it's not all that surprising. Remember the last Olympics were during COVID so coverage was limited and corporate sponsors couldn't wine and dine like they typically do. Undoubtedly the major sponsors plus NBC (and ESPN) have already bought many of the J and Y seats to support their talent that will be covering the games or at the games on behalf of their companies.
Even if they haven't actually paid yet, it's not surprising that DL would be blocking out the entire cabin in anticipation of purchases from their major corporate accounts