I had a quick flick over the time period you gave, and it’s fair to say the vast majority of premiership winning teams didn’t have a brace of wingers on alleged “big money”.
Remember, no one on this forum is privy to just how much money particular players receive from their employer.
That said, there are three teams which I believe stuck out like dogs’ balls:
1. Dragons 2010: Morris and Nightingale (SOO and international level).
2. Manly 2011: Hopoate and Williams (same criteria as above).
3. Chooks (surprise, surprise!) 2013: RTS and Tupou (again, played at the highest level).
The other thing I noticed that in just about each year since 2010, each victorious side had a ‘gun’ flanker.
Meanwhile, Saints will enter the 2019 season with wingers on rookie stipends (or you would think so).
I think the point was that the wing just seems to be a spot where you can (and do) find value, more than any other position.
We managed to keep Morris and Nightingale for a long time as local juniors but they were young when we won the premiership, we probably weren't spending big on them at the time. Also note that we eventually lost Morris for salary cap reasons.
Hopoate was young and Williams also unknown at the time but arguably overpaid after their contract extensions kicked in.
RTS was young, moved to fullback the next year and left for a better offer a year or two later. Tupou was unknown young player signed from Parra lower grades. Considering how contract extensions have been done with minimal fuss and all the other players the Roosters have released over the years for salary cap reasons there's a decent chance he's accepting unders to stay at a strong club.
That all said we should be doing better than hoping that Pearson and Ravalawa develops. Chances are that Pereira and Lomax will be asked to play wing for long periods and we hope that Pearson can find his way into the team and that's not ideal at all.