One example doesn’t make a point.
If improvement would be so certain, why didn’t the previous connections of so many G1 winners keep the horse? I mean they knew what they had. Why bother selling a guaranteed future G1 winners for maybe just a few hundred thousand pounds or euros?
Do you seriously think that GW would have won that many G1s under Macaire and Lageneste? Maybe a few at Auteuil, but certainly nothing in GB or IRE.
Same applies to Galopin Des Champs. I’m sure Arnaud Chaille-Chaille saw lots of potential in him, but why didn’t he persevere with the horse?
Quevega was a decent, multiple bumper winner at three for Damien De Watrigant. But, it was the switch to Willie, Ruby, David (Casey) that made her the horse she became. Or was Mr. De Watrigant too lazy to keep her sound for another 6-7 years?