Arguably, right now Comcast Xfinity has the most/best streamable content if you pay for HBO. This will likely change soon; this has been a long time coming. Cord-cutting is increasingly popular [2] and the studios are adapting.
Disney is gambling that they own enough content to make your top 5 list of streaming subscriptions.
[1] http://fortune.com/2016/09/23/average-cable-tv-bill/
[2] https://www.techdirt.com/articles/20170531/05304937480/rate-...