Yes and no. I see migration between the 2. Enduro Racing is still inaccessible to many people, due to the strenuous climbing and liaisons. I’m not super fit...far from it...one climb on the weekend at Falls Creek was 10km and 550m of elevation. On a big bike, with protective gear and FF helmet in Aussie summer...that’s pretty daunting, and was under 50% of the climbing.
Many hacks like me do both. So do many pro’s....though more of a migration to enduro as they get older. It’s also the challenge and variety of new tracks that people love.
Still can’t see DH going anywhere though. In reality, I know that WC is a silly, exclusive, elitist wank for a couple of races a year....but I still love it.