Filipowski and Livingston are the cherry on top type of recruit. Their scholarships will be there if they want to commit, but it isn’t contingent on anybody else.
Illinois is doing the same thing with Jarace Walker and Cam Whitmore, you recruit them all out until they commit elsewhere or tell you that you are eliminated.
I’d guess based on the how Reed responded after his official, OSU thought they were in it. Then when they saw how he told the same thing to MSU and Michigan after those officials. That made them less confident and they went the safe route with Okpara.