nostr:npub1uxz060za0sz7uzncy45jcksak2lr9wks0hrgug54cvpm9ma8agkqs35ma4 
I think he's been living on royalties and licensing fees for the last 10 or 15 years. In the last 5, it's been the "donations" to his various fundraising pages (the majority goes to him, no matter who the official recipient is).  Without the grift, he's effectively broke.