The trouble is that motorcycles are generally way higher-performance than cars (in terms of e.g. HP/weight ratio), so putting low-friction, long-lasting tires on them is irresponsible. It'd be like putting Prius tires on a Lamborghini: sure, you could drive the thing responsibly and within the performance limits of the tire, but it's missing the point of the vehicle.
Now, if more motorcycles were built sensibly -- with much less horsepower -- then I'd expect the tires to last a decent amount of time. For example, do 49cc scooters have the tire wear problem you're complaining about? I'm willing to bet the answer is "no."