I'm going to guess that the logic behind your 'relatively attainable goal' here is 90% dependent on the fact that far more people can aspire to be a footballer than a professor, due to the general requirement for a PhD. I would think the pool of people aspiring to be footballers is orders of magnitude larger.
They've also been weeding themselves out from doing something that's pretty much exactly the task ("playing football at a slightly younger age against somewhat less good players") for a while - while future-professor-types may well have been doing a range of activities only weakly correlating to future success in the academy.
They've also been weeding themselves out from doing something that's pretty much exactly the task ("playing football at a slightly younger age against somewhat less good players") for a while - while future-professor-types may well have been doing a range of activities only weakly correlating to future success in the academy.