I see your point. Yes for those born in countries with traditionally high immigration rates the system is broken. Even if an employer can demonstrate they need to retain a particular person if this employer later needs to terminate the employee for unrelated reasons you are screwed.
I think the H-1B to EB-2 and EB-1 process should be improved to not be subject to immigration rates.
well, it's broken because of a particular high demand from those countries that's different from the others. I don't think the system should explicitly discriminate one country from the other, but I think it's fair to give a chance to other countries at an equal rate.
Visas/green cards are given to people and not countries
The people waiting in the employment green card lines are evaluated on the same set of criteria . Their ability to perform a particular task for their employer.
I think the H-1B to EB-2 and EB-1 process should be improved to not be subject to immigration rates.