Meh, from a strict game theory perspective restricting trade makes both sides poorer. You know, both parties in a trading contract only sign on the dotted line if both are advantaged by it.
It depends what the costs and benefits are - if in pure money then yes both sides poorer.
But if you take into account social and other freedoms boosting China (and Russia) does not help the average Westerner as their freedoms would tend to reduce to mach China.
