The philanthropy done by Bill Gates and the likes is mostly about lifting people out of poverty and reduce mortality in 3rd world countries. They fund vaccine research, safer nuclear energy research, eradicate preventable diseases and other things such as developing waterless toilets for where there are none today. All very worthy causes which better the lives of millions of people. What he DOESNT do, is pay people a UBI and its unlikely to happen. Why would we depend on billionaires to do this?

This is a government issue, perhaps even a UN issue, given the global scale.

The thing is that if AGI is not taxed (or some other means to fund UBI), society will semi-collapse. Yeah, the big tech companies will make a ton of money initially but if no one can afford to buy their goods and services, it will lead to a vicious cycle that will ultimately end very bad.

Again, I dont buy the analogies with other major disruptions in our history such as the industrial revolution. This affects (sooner or later) everyone. If Intelligence is the commodity being traded, no one is safe.