Why promote a fight that will end in Algieri suffering a one sided beating (again).
We don't know that yet? You can always convince the casuals that it's going to be a good, close fight with the right promotion.
Algieri seems quite marketable to me. White-American, good looking dude (no ****), smart, has a black belt in a martial art, former kickboxing champion, he's basically the fucking Karate Kid, and he beat the Russian Killer that Pac didn't want to fight. :deal
I think it's worth them pushing Algieri on the basis that Pacquiao is beatable and it wouldn't be beyond the realms of possibility for him to cause an upset. That said Pacquiao's popularity is waning itself so any promotion probably won't make a difference to the actual numbers for this fight, and they can always start pushing Chris afterwards should he get the W.