The problem with the Movie is, that it was not good advertisment for D&D the RPG.
Yes, Honor among Thieves is a fun movie. I even got the blu-ray. It even feels like a typical D&D campaign to D&D players (at least it did to me), but it didn't incite in me the wish to play D&D like the stranger things D&D scenes did.
I'd you file of the name D&D of Honor among Thieves you get a good fantasy comedy movie but not something that incites you to play an RPG.
And that is the big failure of Hasbro and WotC. Even if the Movie would have inspired me or others to start to play D&D, there was no movie tie in adventure or starter set to on board new players who like the movie.
Let's say the Movie ticket wad 15$. That makes 13 million people who watched the D&D Movie. Let's say half of that are non players. So 6,5 Million people. If
10% of those would have become interested to play D&D a Honor Among Thieves Beginners Box would have been an ultimate bestseller. 650 000 people buying a Box Set for 20$. That's another 13 million income. If half of that kept playing after the box set and bought the PHB that's another 16 million income. And if of those who continued playing 1/5 becomes DMs, big spenders who buy let's say 5 books that's another 16 million income.
But there was no boxed set. No simple onboarding for players who got interested trough the movie.
D&D has a pretty high barrier od entry to play in comparison to other games/mediums. You have to learn a complex rule system, you have to find mother players and you have to schedule with them.
A computer game I just buy, download and play. No hassle.
So Hasbro/WotC should have made it easier for people who got interested trough the movie to play D&D with a Honor Among Thieves Starter Set. Something that fans of the film easily can identify and that makes it super easy to start playing (as easy as it can get to start an TTRPG).
Like if I just watched the movie and googled D&D, what do I buy? Where do I start? There are two starter sets, and essentials kit, a player handbook, a dungeon masters guide? If I don't have D&D experience I would get choice paralysis.
A Honor Among Thieves Starter Set would eliminate that choice paralysis. It would be the logical start for Fans of the Movies.
But except for npc sheets on D&D beyond, there were no RPG tie ins to the movie that are easily accessible.
So Hasbro/WotC dropped the ball on increasing the core competence of D&D with their 150 Million Movie-Marketing.