He is the first, but others are sure to follow.Usually, there are limits to what most teams can buy with raw, uncut cash, especially new ones.Just ask the Dolphins, who missed out on stars as varied as Kalyn Ponga, Cameron Munster and Reece Walsh when they entered the competition, despite throwing around fat stacks and having the additional selling points of being based in Brisbane and coached by Wayne Bennett.Or ask the Perth Bears, who are six months away from their first pre-season and have signed many a competent and consistent first grader but no player of Luai's calibre or profile, and now seem hopelessly outgunned.All the other challenges associated with the Chiefs still exist today, as surely as they will tomorrow, but they've just flexed a level of economic power that dwarfs anything else any expansion side in rugby league history could offer, and Luai's commitment is proof there really is gold in them thar hills.His move is different to Johnston, who is taking a top-up for what will likely be the final year of his career One big signing often brings two, and few players could have brought the same reputation for success as Luai.He is old enough now that a generation of players, many of whom are starting to enter the league, came into the game watching him win all those premierships with Penrith, and they revere him.He is magnetic and charismatic enough to have sold many a player the Tigers' dream over the past 18 months; he can do so again in Papua New Guinea, only with untold riches to back him up.That's why this is proof of concept