They are doing this for the money. That just means that there are those people that still dig this kind of exhibition match even though they already know that the boxers are not doing it for them as their fans but they are doing this because they are feeding them the one they always want and that is nothing to do with glory or their profession but the money.
This is a potential fight for big money, promoters would not resist this opportunity as they can make easy money even if the fight is not going to be an exciting fight like the real fight. I don't want to say this but promoters are just abusing their fans, the real excitement was only in the marketing as it gives the hype but in the real fight, this is a one sided beat down.