Are you saying people will unsubscribe from Twitch channels because it didn't post a video for a day? That sounds crazy. Why does it happen?
Also, missing a day of streaming might mean that people whose monthly subscription ran out (and would have been reminded that day) end up not renewing. It's much easier, psychologically, to extend a subscription than to renew one you let lapse.
[0] http://www.espn.com/espn/feature/story/_/id/24710688/fortnit...
Amazon Prime subscribers are '5 seconds of fame' subscribers. His core audience has stabilized to pre-Drake numbers as of December, around 5-6k tier 1 subscribers. Note, subscriptions on Twitch are different from 'follows.' Subscriptions have direct monetary value and follows are indirectly valuable metrics (analogous to subscriptions on YouTube).