That’s Disney’s single-most-overlooked opportunity in the parks right now: marketing to line-standers (hostages). I suspect Disney plans to ease into that, AFTER longer line-waits become normalized in guests’ minds.
If Disney started offering sales in the lines right now, visitors would connect it to Disney purposefully keeping the lines longer to yield more sales. But after years pass and people accept long lines as the “new normal”, Disney can introduce items like food and merchandise into the queue. People will view it as an improvement because it offers a distraction to their long wait.