Why are companies making movie trailers/pointless commercials for their devices

Why dont they follow the car industry and make a commercial showing off the features. HTC ONE subway commercial is soooooo bad. Droid razr maxx, Droid DNA, HTC one x commercials etc all suck.....

You have 30 seconds to showcase your device. Samsung lebron commercial was epic because it showed him using all the features of the phone. Samsung gets it.....these other android handset makers dont. Even google making better commercial than these android partners.