Streaming was supposed to be the solution to that. Instead of sending every channel to every subscriber 24/7 (and so having to constrain the bandwidth of each channel so that forty-eleven gazillion channels can all fit on one coax cable), you just let each subscriber stream, say, three channels (one for Mama, one for Daddy, and one for the kids) over the Internet at one time, and let the subscribers decide what they want to watch.
For traditional "cable" channels, that model isn't bad: hence services like Sling TV, DirecTV Now, PS Vue, etc. (My apologies if I left your personal favorite in the "etc." bin.) But there's no guarantee that streamed local channels will have better PQ than OTA or cable. True, a local channel's stream wouldn't have to go through a statmux, but it still has to start at the local station, so the PQ depends on what the local station is willing to invest in its streaming infrastructure.
Of course, streaming comes with a downside too - no DVRing to skip commercials, time-shift, or the like. But since this thread is about PQ, it'd be interesting to hear folks' experiences with streamed local channel PQ. Is anyone getting better PQ via streaming than via OTA or cable? Worse? About the same?