I could see Trump passing in the next 6 months, this has to be taking a toll on him and him losing the PGA probably is the worst thing that could happen to him. He is delusional but life comes at you fast.
He has grifted off enough dumb and stupid people in the last couple of months the loss of income from the PGA giving him the boot should not phase him at all.
You are certainly right that he has scammed an incredible amount of money (over $200 million) off a host of delusional and ignorant people, but emotionally, I think losing the PGA at his New Jersey golf course/country club is a hammer blow to his ego. One with an outsize impact. The only thing comparable is likely the failure of his violent coup attempt.
It's not about money he was losing money anyway with that club. It's about bragging rights and losing the PGA is a slap in the face and a dick punch.