Would you be ok with nobody paying taxes for those 30 years? Even rich people and corporations.
Why would there be any need for taxes in such a situation? If possible, we should engineer a situation like that without waiting for an imaginary zillionaire to do it. It may be possible technology fixes our basic needs situations some time within our lifetimes, leaving humanity free to pursue greater goals.
It's more likely we'll fuck it up somehow, though.
Because people think that taxes are a no brainer. That it harms nobody. If you are making $100 million and you take away $40 million, nobody is harmed. So why try to come up with alternatives when the current scenario nobody is affected? That is the mentality.
Go onto a liberal website, such as huffingtonpost, and suggest a world without taxes. It is not a concept that is even imaginable. Pretty ironic since these people like to think of themselves as "enlightened". They only see the side of what the government gives you. The concept of government taking is like a blind spot that they cannot fathom, it has been done that way for almost a century so there is no other option.
There are too many arguments about what the government should provide. That is what most political arguments involve. I could care less about that. They can give out lolipops to everyone as far as I care. That is like discussing the most moral way to dispose of a body after you have killed someone, without even considering whether or not the act of killing was bad or not.