To paraphrase Hawthorne, "Gyms are always rising and falling in MMA". 15-20 years ago it was Miletich Fighting Systems and Chute Boxe, 10-15 years ago it was Jackson-Winklejohn, Nova Uniao, and ATT, 5-10 years ago it was Wittman/Grudge, etc. They all produced champions that seemed unbeatable, and then time/competition caught up with them. Many other gyms seemed to hold promise only to continuously fail to bring home a belt and/or hold onto it - Blackzillians and post-WEC Team Alpha Male come to mind (though to be fair, Cody did look amazing in the Cruz fight, and Dillashaw was one foot still in Alpha Male when he gog together with Ludwig to go on his title run).