Finally, a direct question.
If I had the authority to decide about late night at ABC, knowing that CBS will no longer be competing in that daypart at the point where Kimmel's contract is up for renewal, also seeing that NBC is worried (hence the changes in the Meyers show)...
I would take the chance on Kimmel, provided his terms for renewing or extending his contract were reasonable in light of what the projected revenue would be with CBS out of that daypart.
At the very least, I would want to sit down with him, have the conversation about the changes at CBS and potentially NBC, and ask him what he thought about continuing. Given the obvious difference in revenue expected in the 2026-27 season, I would likely ask him if he would consider an extension at his current salary plus a percentage of the ad revenue.
So I would take a carefully-reasoned chance. I wouldn't make a decision before I put all the cards on the table with Kimmel, and I would give him enough time to think about it before giving me an answer.