I'm not sure that's a true reflection.
I can't remember exactly but didn't at least one of them get poached by other clubs for doing a good job at Spurs?
Chelsea springs to mind, but as I say, I'm not sure.
Yeah that was Arnesen. But the whole thing was a cock-up.
Levy's obsession as he studied the football landscape after buying the club was the Lyon project of the 2000's. It still is really, he's a Jean-Michel Aulas fangirl to this day. By either developing or stealing the best young talent in the French league and then selling on when their value was at its peak under a stable management structure wherein the manager was replaceable, Lyon totally conquered French football as a club with lesser resources than its bigger city rivals. Jacques Santini was the technical director and later manager who built that juggernaut.
Levy was going to be Aulas, Arnesen was going to be Santini, and Santini was going to be the replaceable head coach, Paul Le Guen, Gerard Houllier, whoever.
See the problem?
Santini realized he'd signed up for the wrong job almost immediately. He was a patsy in this scheme, it was always going to be Arnesen ruling the roost and then his compatriot Jol coaching the team.
And that could have worked really, Arnesen the DoF overlord, Jol the head coach to move on as soon as he got too desirous of money and promises and control. Both were suited for those parts. But alas Abramovich saw the value in Arnesen as well and poached him away. C'est la vie, but that then left Levy with the competent and popular Jol as the replaceable manager suddenly acquiring the dreaded Dinosaur English Manager Role in an organizational vacuum. The horror!
Damien Comolli was brought in as the new DoF having succeeded in a similar role at Woolwich, qualified enough for it, but of course the problem immediately became Jol, who wasn't Comolli's guy. Enter the shambolic Levy/Comolli romance of Juande Ramos, and the rest is history.
Maybe that could have worked too, but it was a total disaster, and Levy in a fit of Little Englishness tossed the lot of them out the door for 'Arry.
It's just a constant cycle. He never creates a coherent, stable structure with clear lines of reporting. It's always Game of Thrones.