Proof? We saw that every comment the Spurs leaked was about his family, "the voices" he's hearing...His family isn't Spursy a lot, they're South Cal people, I guess the Spurs wasn't ready for them, it's pretty obvious PATFO doesn't "love" them.
But I agree with you on family and business. However, Kawhi wont change his mind about that. Sometimes, a family-first guy like him, pays a high price for that.
In March, I posted that his two closest friends since HS doubted Kawhi really wanted to play home season after season. Family is everything...But could be suffocating and possessive too.