Kinda wonder whether a partial solution is taking advantage of network television, if you can. For instance Disney owns ABC. What if they dramatically altered ABC scheduling by adding Disney+ content alongside the sports content that is already there. I see no reason why something like Mandolorian shouldn't be on television. Most people who sub to Disney+ do it to watch 30+ old movies anyway. Pumping up ABC's ratings Mon-Fri seems like an obvious W. In the fall, the football ratings are through the roof. Run promos for your shows and see what happens. MCU shows Monday and Tuesday, Star Wars shows Wednesday and Thursday, whatever else on Friday, football on Saturday.
Even if new eps are available first on Disney+ (at midnight for instance) I don't think it would matter to older viewers, plus there are plenty of younger viewers who don't pay for streaming and would watch. Unlocking CBS type ratings on ABC could completely change this conversation.