I'm sure the Cavs would have had more success had LBJ stayed in Cleveland and allowed their front office to build a team around him, but they wouldn't have had the high draft picks that got them someone like Kyrie.
Yeah, they may have had to create a system for finding talent where others don't see it. It would be an arrogant thing to do, but it could work! Or so I've heard.

Many believe it despite it being an absurd thought. 