There was talk several years ago of sony pictures going out of business entirely. The recent deal with Marvel over Spider-Man was done at least partially out of desperation, after the two ASM movies underperformed.

But maybe that means they’d be willing to share Fox’s Marvel properties with the MCU as well? Maybe we’d see a similar situation to Homecoming where Sony makes a new F4 movie set within the greater continuity and lets them show up in Disney’s movies as well.

As for ANH, I honestly think whoever owns that movie in 2020 will simply come to an agreement with LFL/Disney about a new release.