Owners already get up to 9 seasons of control (up from 7 for the last CBA) over players they select in the 1st round (if they're willing to match RFA offers... a given if the player has shown glimpses of being an elite player during his rookie deal and the max another team can offer is capped at $15-16M).
If they can't create an environment, where a player wants to stay after those 9 seasons, then they shouldn't be rewarded with another season of controlling the player especially without the lack of security a franchise tag offers.
Lebron might want to be the NBPA President because Billy Hunter incompetency (or corruptness) botched the current CBA, where the owners lied about losses and the players gave up several key concessions that set them back 9 years.