Eddie Jones believes the intense competition for a small amount of domestic jobs is one reason why Australian coaches like himself perform well and are sought by nations like England.
Jones is one of three Australians currently coaching major England sports teams.
Trevor Bayliss oversaw England's 2015 Ashes series win over Australia shortly after taking charge, and multi-NRL title winner Wayne Bennett was appointed England rugby league coach earlier this year.
"I think probably one of the reasons why Australia have done reasonably well at coaching is it (Australia) is a tough place," Jones said.
"To make it through, it's tough and there're only a small amount of jobs in rugby and cricket, and to make it you have to do well, whereas in England there're a lot of rugby jobs.
"There're at least 24 professional head coaches jobs, in Australia you've got five."
Jones has sparked an amazing transformation in England's rugby fortunes since being appointed late last year, after they failed to go beyond the group stage at the World Cup.
England have won eight straight Tests since Jones took over, completing a Six Nations grand slam and a series victory over Australia.
They have moved above Australia to second in the world rankings and Jones has clearly had a major impact, yet takes none of the credit.
"Its 100 per cent down to the players. If you don't have talented players, you don't have a successful team," Jones said.
He said his players had to make sure they weren't weakened by the glut of praise being lavished on them by external sources.
"Outside praise is dangerous for a team and they've been getting a lot Of it, so we've just got to be careful," Jones said.
Former South Sydney NRL star Ben Te'o made the England touring party, but will leave Australia still uncapped.
"The idea was to bring him on tour and get him involved and to see where he's at," Jones said.
"We know what he's got to work on and he can go away and work on that."
England apart, Ireland and Wales have also performed creditably on their respective southern hemisphere tours this month.
Ireland split their series with South Africa, and Wales were very competitive in their losses to world champions New Zealand.
Jones pointed out New Zealand and South Africa were each going through a transitional period and a regeneration cycle after both lost a bunch of veteran players after the World Cup.
"There's opportunity for other teams to come forward and take that space and Ireland has done that and we've done it here," Jones said.