I'm with Eddie on the cost of competition being a barrier. I've only done one local comp in Austin, a smaller NAGA tournament in 2023, and even that was a solid chunk of change by the time you add gas and the registration fee. These guys at the higher levels are definitely playing a different game where that's less of a factor.
But on the guard retention piece HoG Drama Desk mentioned, I still try to take something from it even if it's not a direct blueprint for my game. I'm drilling my open guard retention pretty hard right now, especially against knee slices. Seeing how Victor recovers hooks and frames even under heavy pressure gives me a few ideas to try out next open mat.