Smith is an awesome ensemble actor. He has great chemistry with his co-stars in buddy movies, be it MIB, Bad Boys, Hitch or even Independence Day. As Fresh Prince, he had a whole cast to play off. But he can't carry a movie where he's the only star. It becomes evident that he doesn't have the range, and his attempts to act come across as forced. I think people already realised it and are avoiding such movies. The Bad Boys franchise proves that he's still a bankable co-star, and hopefully he'll accept that position in his future work, rather than soloing vanity movies.