Agree with Nightz, there can be many factors, some small that over time become a facilitator for change.
As a side which company was De Jong a CEO of?
Computer software related to sports coaching/ management systems: "his long-standing job as general manager running the New Zealand office of a multi-national software company whose programs are used by New Zealand rugby and cricket, among others."
Unusually for a pro footballer, Fred combined contract computer programming work with playing for Fortuna Sittard in the Dutch top flight for three seasons (53 appearances, 6 goals) and a season in the Second Div. 1990- 1994. Says he needed the mental stimulation he wasn't getting just from playing. Always one of the smarter footballers around...