Actually, it has. As Nunn prove. And Emerson. And Parker. And dozens of State cases that never even made it to the Federal level to BE over turned.
The only times it has stood up to judicial scrutiny is when some liberal activist judge tries to misapply a judicial power not actually found in the Constitution. One, btw, you have spent thousands of posts defending.
200 years they all agreed to maintain this legal fiction that the second amendment only applies to the federal government?
Actually, that view wasn't used until quite recently. It doesn't appear anywhere until Silviera V Lockyer.
Nunn held that 2nd Amendment protections don't apply to concealed weapons.
Poor you.