I think if Wizards of the Coast were really on the ball with their ‘we need to monetize like a video game’ thought process they should have a stash of full time DMs on salary doing semi canonical adventures in a West Marches style. The pay model? Well each DM or Region would be named a different Adventurers Guild of which there are dues for entry and a nominal fee for events or if you join more than 3 adventurers a month or something…then they could open up revenue streams of merch for guilds, or books for the settings, or replicas of loot the parties could leave with.
Yeah I think the existing adventurer's league is something that really has the potential to be much bigger than it is... If only someone was working on that...