Regardless of whether D&D2024 deserves to succeed or not, it's the 800 pound gorilla in the industry and it can produce substandard adventures, rule book, etc with little consequence. It's unfortunate, but it's the reality of a business that dominates an industry.
Complexity is personal taste, but when most people get introduced to something new, complexity can be a turnoff. It's typically when someone has been doing an activity for a while that they desire more depth of experience.
IMHO, it seems that ShadowDark is the only new game that has any potential staying power. Although, I don't see it growing beyond niche.