[rabbitproof]

Given money is basically a draw in most cases, the reasons to move are really playing to win, both in the now (championship ready) and the future (have a cast that will be CF/Finals ready for the duration of the contract or 3-5 years).

I think Dallas sold them on a dream of being championship ready after you sign ("IF you come, THEN we will.."), which isn't a very good "now" sell because they don't know what the team makeup will look, how they might share touches vs being the "finishing touch", knowing the rotation, etc.

The future pitch was built around the owner/FO/coach rather than fellow young stars (Wade/Bosh, Harden, CP3/Griffin, Steph/Klay/Dray). This is the sort of thing that makes sense to management ("the infrastructure and process are stable!") but less to the employee. As the employee, at the end of the day, the people you are sweating and working shoulder to shoulder with mean more than the executive team upstairs.

And so, free agency has really become a methodology of the rich getting richer.

To j0shi's point, rather than go for the one-move rebuild, Dallas has broken it into two-steps. Get some younger B level guys to set up the level A targets, which helps with both the now and future arguments.