That may be true, but if they work as advertised, why do they need to continue to evolve? What is fundamentally insufficient about rim brakes? They worked perfectly for decades at the highest levels of competition and are simple enough to put on cheap bikes of all varieties. 10 years ago there used to be threads like this but everyone was on the side of rim brakes. Nobody felt rim brakes were a problem. The only reason they might not be competitive in the market is because the same companies that make rim brakes also make disk brakes, and the new rage is disk brakes. You don't even have an option any more on new bikes. They all seem to have disks. That's what the OEMs are pushing now.