I have this same problem so I added. Switch to the starter after replacing the starter and the ignition switch and now the car starts with no problem. My diagnosis is there must be a bad connection in the harness that goes after a long while of usage. Try adding a couple of wires and a switch. I’m willing to bet it will crank. You other guys that are cranking but no start need to check fuel pumps and crank and cam sensors. I guarantee it’s most definitely one of those issues. Good luck to all of you.