It may not be the correct term of "disrupt", i don't follow the startup culture too closely - all i mean to say is, most products i've seen have bare bones discovery methods and don't let the user help inform the platform about what discovery they want. It would be like Searching Google if the only thing it gave you was precompiled lists of sites you might like.
So, i long for someone to "disrupt" this space by providing obvious (to me) content discovery and categorization methods. If you could provide me with a Spotify-like solution, and throw in meaningful ways to search, filter, discover, etc content? I'd switch in a heartbeat and i'm sure music lovers would spent quite a bit of time on that platform in the same way that they contribute to Spotify.
About 99% of "innovation" these days seems to focus on logistical non-issues instead of the essence of things.