> That would tip the balance of power to another corrupting influence. Corporations, say. Or professional associations representing highly-educated high earners like doctors or lawyers.

Even if what you say is true, which I do not grant, your implication is akin to "we should not punish criminals, because some other criminals will rise to take their place." It's a defeatist meme that mainly serves to protect the interests of the already-powerful.

Some work is never done, but that is not a reason to give up on it.