The only big state schools I have seen higher than us are Texas and Illinois. There is a big population gap there. We have a lower population to VA or NC, and their percentages are higher, though I believe UNC is capped by law at 18%, which I think we would gladly take.
I did read about California, but there is a big difference. The state now has a huge surplus. They don't need the OOS funds. NJ is in dire fiscal straits.
The other reality is that outside of RU, TCNJ and maybe Rowan or NJIT the NJ state schools do not really have a built base of people that want to attend. I would submit that the kid who doesn't get into the NJ state schools is glad to go to WVU, USCe, James Madison...they will have fun and not to much more money that mom and dad can't pay. The mom in the Shop Rite line would take pride in James Madison over Stockton or Montclair.
I would say if this was a real issue- NJ students locked out NJ schools- we would have the backlash CA did.