The entire purpose of Sanctions is for them to be weapons. Specifically they hinder a nation's growth in the long run.
USA loses its economic leverage
USA is too big to fail at this point. Might not be #1 economic power forever, but it will be top 5 if not top 3 for the foreseeable future (large agricultural base, largely energy independent, huge tech sector, highly competitive domestic economy and huge international corporstions, etc.)
US can't finance anymore and now China and Russia are significant enough rivals to prevent this, nothing like 91-2016.
BRICS nation's have nothing in common except for their interest in having a reserve currency that surpasses the dollar in it's international purchasing power. The nation's in BRICS either don't have an economy big enough to do this (South Africa, Russia, Brazil, India), blew their chance (China, Russia) or won't have a chance to do this for a very long time (Brazil, India).
escalating authoritarianism
All I have to say about this is good luck having it happen in a liberalised western democracy in the information age. Not impossible though.