- it wouldn't be liquid, so you'd be giving part ownership in assets
- the value would be slightly less than median yearly income per recipient. At a pretty sizeable 5% average return, the individuals would net about $2,000 a year.
- if they chose to sell the assets, they would end up with about one year's median income and then it's gone
I'm not sure how much money you think lives up at the top, but redistributing it is not sustainable, and it's certainly not enough to magically pull everyone out of poverty indefinitely. (Or even for very long, at that.)
There are a ton of reasonable discussions to be had about imbalanced power structures between socioeconomic groups, but this whole redistribution thing is just a fantasy.
One can look at a million/billionaire and say, "oh, this person has 50 cars. That's way too many cars for one person to have! Let's give them away to people who actually need cars!" So you seize them and give them away—along with the other 12,000 super wealthy people that own 50 or more cars—and then you have... 200,000 people who still don't have cars.
For groups that preach so frequently about global and ecological sustainability, there's a disturbing blind spot for economic sustainability. I think that's more a feature of envy than responsibility, unfortunately.