In this way, the rights of private proprietorships to control their parking areas would be preserved, but corporations would be required to be "good citizens" who do not infringe the right to keep and bear arms.
This would seem to be a small price to pay for the substantial benefits which incorporation provides and it is completely consistent for the legislature to dictate what benefits and requirements attach to incorporation.
If a privately run hardware store wishes to disarm me in their parking lot but Home Depot is forbidden to do so, I know where I will choose to shop.
What is being "preserved"?
What does a private proprietorship gain by acting against our Constitutional mandate that the RKBA's shall not be infringed?