Every year a big part of WrestleMania's promotion and selling point is the streak. There are shirts, posters, hats, video game modes and DVDs, none of which will have quite the same ring with 21-1 as a tagline. At 20-0, WWE released a streak DVD chronicling every Undertaker victory along the way to building the illustrious record. It wasn't hard to imagine that another five years down the road a second set may be released when five more wins had been added. Instead we've gotten all the marketing out of the streak that we're ever going to get. All the merchandise and selling points are now over with. It was a great way to earn revenue for the company for quite a while, but no longer.