Here are some points of consideration:
1. They don't have $7.5T in liquid. The average american won't be able to use that $25k to pay a hospital bill or eat. Also note that one-time wealth transfer won't even pay in full for one major surgery.
2. You've wiped away the incentive for getting-big mentality which drove some of the billionaires to innovate which advances society to this point. Think - discouraging a future Jobs from making another iPhone-like device.
3. After the one-time transfer, it turns out we need more money for the common folks. "Why is the line at $1B? Isn't $900m enough? The line should be $100m." And so on and so forth.
[0]: https://fortune.com/2025/12/08/how-many-billionaires-does-am...