Something fishy about your math here.
$272k per adult is $544k per family. If you paid it over one year that's $45k per month.
Edit: oh, I see, you are only giving people the interest on the capital and assuming a growth rate of ~2%. Both of which seem quite silly to me, but whatever.
And then the big question is: how is this society different from Soviet Union? Literally, i am not exaggerating: an economy where capital is, by law, owned only by the government, and private ownership of means of production is a felony (or how else you will take all capital away)? Or if you want to literally give shares to individuals, not to some immense state fund which will do the redistribution job, what will prevent these people from drinking and gambling these shares away? If American rich will be robbed off all their money so they won't be able to buy, to the Chinese rich (they will be able to afford as people will be running to sell off - if they were attracted by 2.3% returns they'd be buying stock now as it is, only reason why they don't is that they don't see it as attractive - so they WILL sell - and stock will be dirt cheap)
It all sounds like a way to kill capitalism, or sell it off to foreigners...
If it was paid out, you would lose your job.