But Roku's gross margin still expanded from 42.5% to 54.5%, even as its hardware business struggled with component shortages, and it generated an adjusted EBITDA of $248 million, compared to a loss of $20 million in the first half of 2020. Analysts expect Roku's revenue to rise 60% this year and 37% next year. There are hopes that it will post its first adjusted profit this year, and for its earnings to rise 32% next year.