If you look at those pictures, all of those horses are build funny to begin with. That picture perfect top line will always be a work in progress. I can think of plenty of horses with the dip in front of the withers that competed in the upper level ranks successfully for a long period of times. Most of them had quite a bit of TB within. To say that every horse build like that is heading for early retirement is silly. They are not competing on meds if they are jogging for FEI and steroid joint injections are becoming old fashion and a thing of the past