Not to take away from your point, but the revolving door is also good because the experts should be the ones who make the rules. There are too many details about every niche that smart non-experts will get wrong and so we need experts.

Good luck reconciling these two conflicting points.

I don't think that's hard to reconcile - that only involves people in industry moving to government, which is far less problematic.

What happens after the job they were hired to do is complete?