The Hall model is to purchase tried and tested horses from elsewhere, bring them over, work them hard and start cashing in. He and his team have a great eye for talent (and the type that will suit his training style) and obviously good bloodstock agents who can source opportunities. The more success he has, the bigger warchest his owners have to buy the next one. Unfortunately, when a model is succesfull, others will replicate it and the result harms the breeding industry. Why would he ask his owners to stump the cash for a yearling, pay fees for 12 months, only to find out if the thing can actually go? His current model offers a return on investment in a much shorter time frame and when you are reaching for your wallet this is a massive contributing factor to the decision you make. I would love to see a team like his invest more in locally bred horses but it is his business and he can do as he pleases. The crowds still look pretty good at GP so I would say he isn't doing any harm at all.