There will be a ton of new merchandice when the lion guard comes out. Also don't forget that the lion king was the first to get a 'legacy collection' cd set, has its own funko pop set, had the first three movies re-released on blu ray in the uk late last year, and was the first disney animated movie to be referenced in the marvel cinematic universe.
Don't believe me? Rewatch the battle for new york in the avengers. In the scene right before captain america talks to the cops when you see the cops talking to each other there's a poster for the lion king broadway musical in the background. Since this was a digitally recreated nyc it totally counts.