Do you believe the economy is a zero sum game?
Your assertion about tax planning misses that proper UBI implementation would include tax reform to ensure the wealthy can't avoid contributing. If anything it demonstrates your clear understanding of whom would actually be taxed to achieve the funding for such social programs. The dragons.
More importantly, the data shows UBI recipients spent money locally on necessities and small businesses, not funneling it to large corporations. The 'indirect subsidy' theory contradicts spending patterns observed in UBI trials.
If only there was a metaphor to explain that. Maybe something about a mythical creature, hoarding piles of treasure.
The 200 billion that Bezos is assumed to be "worth" is currently in the hands of the people, being used by us. If we wanted to fix society instead of buying amazon shares we could do it today. Bezos hasn't "hoarded" it, we have it.
"To the dismay of Thorin, Smaug the horrible turned out to sit on a pile of paper that anyone could buy if they wanted to and all the gold was already in circulation in the town of Bree."
To be frank, this whole “the economy is not a zero-sum game” argument is kind of a meme at this point.