another example is Mavic. They don't offer a carbon clincher and probably never will. The closest they've gotten is the 40c the hybrid alloy/carbon rim. They were also super resistant to wide wheels and were probably the longest holdout in the industry. They're finally making some wide wheels. A lot of people bad mouth Mavic for various reasons, but I have to say I've never had a major problem with a Mavic wheel that needed to be sent back to Mavic. I've sent my Enves back and had a rim replaced, and I've also sent my Zipps back. I passed up a deal on the 40cs and bought Enves instead mainly because I wanted the wider rims. In retrospect, maybe that was a mistake...