Just to add to the above, put yourself in the players shoes.
You win one in fifteen being told to play a certain way. You would quickly lose faith in that playstyle permanently because it isn't getting results.
If, however, you adjust and play a natural game, then when that's found out a bit you revert to the first philosophy, you catch opponents on the hop, the space to play that style of game is suddenly there and you have faith in it again as a viable option.
It's common sense. Put it in any business practice - if you work for a company that is haemorraging money because of poor business practice, then you'll lose faith in the business strategy, no matter how successful it was in the past. If you adjust that strategy until the market is different, then you keep your confidence up and adapt with the times, make money and do well. You have faith in the management to adapt and change to what's in front of them, rather than pretending it's the same business environment no matter what and doing the same thing over and over again is bound to yield results at some point.