I believe that you are looking at S&W coming out with their own AR and bringing their shooters completely under their umbrella; You get people leaving a company for another that offers more opportunity (broader product line) like Glock not having revolvers or single stacks; you get good recruiting by team managers and other shooters; and then there is Benelli brining in the new young pup and Tom Knapp jumping to Winchester for

.
As far as the different management between production and competition - That is true at the grunt level, but every department opperates to benefit the whole, and they all answer to the same board. PR personality number one and performance success number two are what matters to everyone at all level of management.
As far as spokesmanship and endorsements - A pro shooter is going to bed with whoever pays the bills. They are like used car salesmen - The best car is the one the are peddling at this moment.