But Rob Holmes, vice-president of programming for Roku, told the BBC: "The pivot from subscription to ad-supported is a different set of economics. We're really excited about the value we were able to achieve through the ad-supported model.
"This is the kind of content that you don't normally get for free."
As part of the acquisition, Roku will inherit "most of" the Quibi library. Some topical programmes, such as Around The World by BBC News, will not appear on the Roku Channel.
However, more than a dozen programmes that were commissioned for Quibi before it collapsed will be seen on the Roku Channel for the first time.
They include The Now - a film by US directors the Farrelly brothers - and Slugfest, a documentary about the relationship between Marvel and DC Comics.