I agree that this is what the few content owners that are left really want but I'm not sure that viewers want to suffer what is required to get there.The Disney-Hulu-ESPN bundle is a great offering, but I don't think we'll see all the content on ESPN's linear channels available in a standalone streaming service for anything resembling a reasonable price anytime soon, not as long as cable TV still exists in its present form. Such an offering would represent a massive sea-change in the OTT landscape that would likely accompany death-knell of traditional pay TV as we know it. Not to mention, there are probably a lot of long-term contracts in place with the various sports leagues and cable operators that prevent that from happening. Heck, there isn't even a standalone RedZone yet due to prior contractual obligations.
I submit that this "sea of change" will wash away services like Fubo and YTTV in favor of aggregators like Amazon, Apple TV and The Roku Channel but it may not take out the old school offerings of satellite and cable where multicast remains the order of the day. Thousands streaming their own stream is beyond what most systems can handle (or even be provisioned to handle).