> I'm glad cars never quite got to the same homogeneity or we'd all be driving a Datsun Sunny or something equally horrific.
Well, cars are incredibly homogenous ( https://medium.com/swlh/the-zombie-mobile-b03932ac971d#.mu5k... )
Some niche markets exist, but 98% of what's being bought is a completely interchangeable middle ground compromise, made by huge companies that are only looking at maximizing short term profits, without care for technological, economic, or sociological advancement.
In every industry that requires large up-front costs for economic mass production, this is true. Hopefully, 3D printing and its sister technologies will make manufacturing many things on a smaller scale more affordable, and disperse the (mass-) consumer-producer dichotomy once again, in favour of local on-demand production of everyday items.
Only with such a level and flexible playing field can you expect innovation to thrive: if it becomes affordable to buy (or create) the best tool for the job, instead of relying on mass-produced mediocrity because one-off items increase one or two orders of magnitude more in cost than in marginal utility.