You asked, I answered. Are the solutions perfect? Hardly.

Of course, since our current system is crime-free (at least, they all get caught and punished) and allows no unfair advantages, we needn't worry about it.

One point you overlooked in your point-by-point analysis is that there are many options. You treated each as if were the only one. Also, many of the options are available under current laws, such as boycotting an interracial couple. Nothing under law prevents that here in the Land of the Free©.

If your point is that a Randian system is unstable and incompatible with human nature, well, so's every theoretical system. Not much shown there. But the interesting thing, to a non-fanatic, is that for all its flaws, a little analysis from the Randian perspective can provide insight into workable alternatives to what we've got. You don't have to rip out everything and start over; incremental changes can incorporate good ideas, whatever their source.