He looks at a team flanked by KD and Kyrie and he might change his mind. If those guys lock in for 4-5 yr deals, I think he'd be inclined to do the same.
KD is probably the lead on that team as he's won more and has more experience but he'd slow down around year 3 and Davis would be 29 at that point, perfect timing for him to run the show (which actually, could come sooner if they actually win a title).