Financial restrictions in the Welsh leagues have seen some of their most talented players and coaches seeking work outside of the region.
"It's not just rugby coaches, it's rugby players, it's conditioning coaches, it's analysis, it's everything to do with the professional game of rugby," said Jones.
"In Wales there is a good system where we are developing not just on the field but off the field as well.
"When you grow too big for something you move on and England and further afield are targets."
Jones is one of three Welsh coaches currently plying his trade in the Aviva Premiership.