Yes, and I have done this in the past, civil disobedience being the only course sometimes.
Today, with more options at my command, I choose to do what I have mentioned already on this thread and what you have stated -- I simply take my business elsewhere. In fact, I don't even visit (or if I do, it's on business and not very long!) states that don't acknowledge and respect my God-given rights. I vote with my feet and with my wallet whenever the opportunity presents itself.
My only additional point is that I do not believe we should use the force of law and the government to compel a property owner, who has expressly stated they do not want fireamrs on their property, to allow those who come on that private property to do so, whether in their car or on their person...again, short of invasion or insurrection.
In essence, that would force private property to become public property (which slippery slope we are already well down) and that opens up a can of worms and set of circumstances that are just as dangerous to liberty as any other. On public property, or my own, or that of liberty minded people who feel as I do, I believe any person can and should be armed at all times at their own discretion.
I do not necessarily agree with a private property owner who establishes conditions prohibiting fire arms on their property...but I will support their right to do so on that private property. To not support that right, will mean the creation of laws that will ultimately be a two edged sword and be used to infringe on my property rights and compel me thereon.