Then the US should lift the sanctions, because they never work, if the aim is to force regime change in Russia.
It hasn't worked in Cuba, or anywhere else the US has tried to force regime change by sanctions, so why think it will work in Russia?
In any case, all of the criticisms of Russia's oligarchic economic System apply also to the US and UK and the larger countries in Europe.
Now we are seeing the US lead the West towards sanctioning literally more than half the world's population, will the sanctions cause the pain as planned, or will Russia, China, and Venezuela's economies turn out to be stronger than ours?
Clue - who has the more fossil resources?
What is the point of a petro-dollar, if there are no fossil fuels to trade?
I hate to say it but this time I think it is us who will feel the pain of all the populations affected by sanctions in the past.
In fact the very concept of sanctions are oligarchic themselves, that is the irony I see. Were the people of any country exerting sanctions consulted? Nope.
Will those countries sanctioned feel any sympathy for us if/when it backfires?
Nope.
What goes around, comes around.
Unless we go for Kardashev Money, all countries in the West.
That looks the only defence to me.