With the war in Taiwan, we are close to that already if not handled carefully. US is the leading power and soon will begin to introduce sanctions in different organizations and blocs they belong and this will definitely cause a retaliatory sanction too like is happening with Russia.
This is true.
Any country that goes against their way will be sanctioned heavily. I don't know what it looks like really in Russia right now and how their economy is doing.
But basically, if a country goes against them and will have to ally with their enemies, there will be huge consequences for that country and a blow of economic sanction is going to be one of them.