I think the simple answer here is that we grew up. Most of us in the scene at that time and creating these types of tools were between 16-20 years old.
That's right. There was a time when reverse engineering was a big scene and creating these kind of tools was a craze. But eventually it faded away as people started using more web based tools
tools are private or security companies were created based on this work.
Only few are published (to create market for defense tools or penetration testing you need to show that hacking is very easy - no one needs lockers if there are no thiefs).