The rise and rise of Roku can be encapsulated best not by centering on another set of impressive financial results, but on the size of the conglomerate that the streaming device company is willing to challenge head-on. Last September, many overlooked the significance of Roku standing up to NBCUniversal and the might of Comcast’s lawyers in a move that ultimately put an end to a distribution blackout that was in danger of escalating to the detriment of millions of consumers. Some eight months later, Roku is showing similar determination against the monopolistic practices of Google, having recently slammed Google’s distribution terms as “predatory, anti-competitive and discriminatory”. Unless resolved, it could see access to YouTube TV vanish from Roku devices, which…