Before the Glock, and several of the other high reliability, Polymer framed semi auto pistols came out, it was said a semi was more apt to jam than a revolver was to break. I don't think that argument is valid anymore. Semi auto designs have gotten far more reliable over time, while revolver design has pretty much remained the same.
If anything the revolvers have become less reliable with the advent of all of these silly, stupid internal locks. Smith & Wesson had several models lock up, rendering the gun useless, when they first introduced their internal lock mechanism. This forced many owners to return the weapon to the factory for repair. My local gun shop had to send the first 3, X-Frame .500's he sold back because every one of them locked up, one on the first cylinder full of ammo fired through it. He stopped selling them for over 6 months until S&W got the whole mess straightened out.
During all of this the semi auto weapons just kept getting better and more reliable. Kimber along with Springfield Armory, as well as others like Les Baer have improved reliability of the 1911 to almost perfection. The Glock along with the Springfield XD have advanced the Polymer pistols to a previously unheard of level of reliability. 30 years ago it was difficult to find a factory semi auto that would feed hollow cavity bullets with any reliability without having a gunsmith do a "throat job" on the barrel. Now it's all but impossible to find a brand name semi that won't. Revolvers are still a formidable self defense weapon. But as long as semi autos keep improving the way they have been, they'll always be playing the role of catch up. Their ammo capacity limitation, along with the slowness of reloading, is yet another thing that hampers their popularity. Few of us can mimic Jerry Miculek. Bill T.