This is an interesting point, because we didn't get this at all with resolution— most of the 20th century film catalogue was high definition from the get-go and

This is an interesting point, because we didn't get this at all with resolution— most of the 20th century film catalogue was high definition from the get-go and happily got re-scanned and re-sold as VHS, then DVD, then Blu-Ray, and now as 4K and 8K digital content. But framerate is different, and there will probably be a debate like there was with colorizing ("Tell Ted Turner to keep his crayons away from my movie!") around whether it's appropriate or desirable to interpolate legacy media up to modern framerates.