I understand the argument, the problem is that you haven't actually done the math, and your view and the policies you support are not actually backed by any data.

Even just looking at it from purely economic terms, you need reliable answers to the following questions just to begin calculating a high level estimate of the costs and benefits of the policies you support.

Since you support these benefit, surely you will be able to provide me with well sourced answers to the following questions:

1 - What is the discounted lifetime cost of this historical institutional imbalance that you mention?

2 - How many years earlier would those institutional imbalanced be fixed, if such a system as you propose (whether quotas, or anything else) were to be implemented?

3 - What is the discounted lifetime total economic cost of imposing such policies? Not just the first order costs, but also the effect it would have on present (and near future) hits of productivity, structural incentives, risks, etc...

Once you have answers to those 3 questions, then we can start looking into other effects, and other costs, but the fact of the matter is i suspect you haven't actually got reliable and well sourced answers to those questions, and that the answer you do have are not likely to support your stance.