Well, the rather obvious correct answer is that a measure of the number of non-mining validating entities has fuck-all to do with a measure of economic power.

However, your entire argument that the desires of the miners (as a class) is held in check by the desires of non-mining validators (as a class) is utterly dependent upon the assumption that non-mining validator count is a valid proxy for economic power. These numbers bear no relation to each other. Which is why you are either too internally mentally conflicted to be able to see this simple fact, or you are too dishonest in your argument to admit it.