[DrBrightonone]

I would not want the job of designing a club to improve the game of most golfers. Like Prov said, everyone is different with very different needs to maximize their swings. Design a club to cure one problem and it creates another for the next golfer. I think each manufacturer has carved out its niche in the market pretty well. TM certainly seems to have a stranglehold on driver sales but fights with many others for the GI iron market. It appears to me that Mizuno has staked out a good portion of the players iron market and I don't really see a strong competitor for that market segment.

Of course, these are my musings and could probably be laid bare by someone with actual statistics. However, my opinion as a golfer who views this as a semi-interested observer has some merit because it is mostly perception that drives public opinion.