Hi John! Texas was behind, as it was one of the last frontier areas. And with the urban frontier crime problem all over the US, Texas is probably ahead now.
I am reminded of an incident in the past year... A man and his wife are out having lunch on a weekend afternoon in the big city. In an ok area. They return to their pickup, which is parked on the top level of a parking garage. Surrounding office buildings tower over the couple of floors parking garage. As they walk to their truck, a man approaches them and asks them a question. Something innocuous. Before they can answer, he pulls out a knife. And he ain't acting friendly, either! It doesn't look good for the man and his wife. There is nobody to help them. No white knight riding in to save the day. Trying to keep his wife behind him, he backs up and tries to work his way over to the front of the truck bed. The man suddenly lunges over the bed, breaks out the back window of his truck, as the creep lunges to stab him. The man reaches through the broken glass, and comes up with a pistol. Just as the creep is on him. Two shots, just in time. The man protected himself and his wife. No one else could have done it for them.
Jumping to the other end of the spectrum, there is the Killeen massacre. Where 22 innocent people eating at a Luby's cafeteria were systematically executed, one by one, before the police arrived. A lady who became one of the survivors watched her Grandfather be killed. A window was broken and some people slipped out of the restaurant . Her Grandmother would not leave her dying husband behind. Her Grandmother was then executed. Before very many people had been shot, the lady had reached for her purse, where she usually kept a .38 (illegally carried at that time). But as bad luck would have it, she didn't have the gun in her purse then. It was out in the car in the parking lot.
Any one person having a gun with them, and being willing and able to use it, would have ended the massacre early. But no one did. This event, and her testimony, caused the legislature to pass the concealed carry law. Which has rules and regulations, and a big responsibility burden on the carrier.