For sure both sides lose. But ultimately, this has already been discussed in the Taiwan thread many times in the pastYet Russia managed to find other partners pretty quickly and recover much of those losses. China does not have too much of an alternative to Western clients. Certainly not of the same value. Russia fears being cut off from Western clients less than China does. Of course it's a two way street and the West absolutely fears being cut off from Chinese clients (and more importantly, suppliers). China is slowly weaning itself off Western dependence faster and more effectively than the West is weaning itself off Chinese dependence. Western corps get economic advantage while China gets supplies it currently isn't able to provide itself with. However that list is shrinking by the day as only a few strategically important tools are not within China's inventory of expertise yet. Western corps and economies cannot survive without China's "over-production" and deflationary effect of affordable Chinese exports.
Hence both sides lose some things. It just doesn't make sense to compare Russia. A relative small player.
If a full decoupling happens, I would much prefer to be on the side which has all the manufacturing and "no money", than on the side of zero manufacturing capacity and a lot of money.
What is wealth? Goods and items or paper/digital money?