I've touched on this a few times in a few posts but it hasn't attracted much discussion, so I decided to bring it out into a separate topic in the hopes it would spur some further discussion. I'm not looking to get into a "new ball and club technology is good/bad/neutral to the game" discussion, we've had enough of those including a couple running right now.
What I want to highlight is a really rough timeline with various technological improvement in golf and whether they helped the game in terms of making it perform better (longer, straighter, etc.) or less expensive to participate, whether reducing cost or making equipment more consistent which reduces the gap between what rich and less rich players can obtain.
Please help with this timeline by adding stuff you think is missing or correcting stuff I'm getting wrong (the dates are just estimates, if I'm off by a few years either ignore it or correct it at your option, but it shouldn't matter to the point)
1850 - gutta percha replaces feathery - lower price, better consistency, LESS distance(?)
1900 - rubber core ball - lower price, better consistency, more distance
1930 - steel shafts replace hickory - lower price, better consistency
1970 - surlyn cover balls - lower price (i.e., lasted longer)
1970 - cast iron heads - lower price
1980 - metal headed drivers - better consistency, longer life, better performance on mishits
1985(?) - graphite shafts - better performance (more distance)
2000 - big headed Ti drivers - HIGHER price, shorter life, better performance
2000 - new generation golf ball - better consistency (no rubber windings) better performance
Note that most of the changes up until the past few decades were to make the game cheaper to play through equipment that cost less initially and/or lasted longer and/or had better consistency from the cheapest to the most expensive variations. A lot of it was due to automation taking human labor (and human error) out of the equation.
But now the changes are almost totally price insensitive, they are all about better performing equipment. Perhaps that's a natural outcome of an economy that gives people more disposable income and more leisure time, but it seems to me that for those who claim "growth of the game" as a goal, that making the game less expensive is going to help more than making us hit better, further and straighter.