Beyond the providers still offering linear TV (and the new ones being built in a new "trend" sometimes referred to as FAST TV [1]) You can see some of the linear background channel desires/trends in Twitch streaming numbers, too, and in some of the popularity of some Twitch streaming channels (such as MST3K's 24/7 MST3K channel). Also this is part of why several big "comfort events" on Twitch such as 24/7 streaming of Bob Ross or Mr. Roger's Neighborhood blew up virally.

[1] https://www.mni.com/blog/popular-streaming-services-what-is-...