Where are you going to go? All the OTT providers are similar, it's just fewer channels for less money. No one has an incentive to sell you individual channels and the channels don't have an incentive to sign contract with someone who would sell you individual channels (because they can just do that themselves for $10/mo). Remember that a cable operator can't just decide to start carrying a channel, they have to sign a contract, so a channel can ensure that they can always under cut someone who's selling unbundled channels and still make a healthy profit.
If you're interested in more than a couple channels then it's going to be cheaper to get a package through someone like Playstation VUE or Sling. You're paying anywhere from $20-$75 for one of those services and once you put it on top of your monthly internet how much are you really even saving vs. a Double Play from a cable provider?
But they won't make more money if they keep driving more people off.