Google has unveiled its new Chromecast with Google TV, a dongle that is the first proper streaming device from Google – marking the end of an era. However, the relatively high price for YouTube TV, $65 a month, means that it is technically cheaper to buy one of the new dongles monthly and just make new Google accounts, to enjoy the free month of YouTube TV that new devices get. We doubt many people will try that, but it does point to a problem in the position of the dongle. Ostensibly, it’s meant to be a conduit for the low-cost OTT services, and drive people towards the free-to-watch YouTube website. However, while Google wants to grow its YouTube TV subscriber…