"Commercial activity took over for England's players after that World Cup success. And significant senior players retired at the same time."
England play three Tests against World Cup runners-up Australia next month in Brisbane, Melbourne and Sydney and Jones believes the tour will expose players who lack the commitment he demands.
"The tour will be hard - we've got three difficult Tests there and we know that Australia have picked a strong squad," Jones said.
"It will be all hands to the deck and we will separate the men from the boys. It's not about players having a nasty edge, but being desperate to play for England. That's what I want.
"Owen Farrell would be top of the tree and he is from Wigan. It's all about how desperate you are and George Ford is the same.
"They are kids who desperately want to play for England and get better. They are the players we want.
"There is no doubt that players have had it too easy and been handed caps."