I don’t think this was all about money. Raja had been trying to run Radeon Technologies Group like an independent company and pushing for separation from AMD for a while. HardOCP did a good piece on this -> https://hardocp.com/article/2016/05/27/from_ati_to_amd_back_...
I think the recent Intel + AMD custom chip was probably the last thing Raja did before he got pulled RTG got the reins put back on and now he’s hoping ship to peruse what he’s wanted all along. To work with more independence.