At one point in the not-too-distant past, Roku was a top-performing stock.When it comes to the streaming industry, investors' attention immediately gravitates to Netflix, a dominant force in the media and entertainment landscape. Roku (ROKU -2.06%) is also positioned well, though, in its own unique way. In the three years leading up to this streaming stock's all-time high in July 2021, it had skyrocketed 886%. But the situation is different these days, with shares trading a tear-jerking 79% below that peak ...