I thinks it's all about cost Stix. Training stayers nowadays is an expensive proposition as it takes time to bring them on and a lot of trainer expenses. A sprinter however is [mostly] doing it's best work from 2yr. old to 4 yr.old and if it can win at group level, future stud fees can result in astronomical $ amounts.

Take for example Encosta De Lago [with only a 11.8% win SR] at Coolmore stud. At a service fee of $302,500 the stallion has generated revenues of over [hold your breath] $68 million and it's not even the top earner! Stud fees is where the real money lies, not prize money and if an owner and a suitable trainer can produce the goods from a young horse, serious riches await. A quick initial earn on investment will alway predominate a slow earn. So that is why owners predominately invest in sprinters, not stayers.