None of us build out of pure originality. Each new discovery—aha! moment—came through a series of steps: spaceships from firework rockets, DACs that wouldn't exist without digital audio pioneers, transistors that wouldn't have been looked for if not to replace tubes.
Ted Smith's amazing FPGA based DirectStream builds on the work of others.
My invention of the Power Plant wouldn't have happened without building upon the efforts of amplifier experts before me—and they the work of those before them.
Innovations in any field rarely (if ever) happen in a vacuum.
Each designer owes success to those before them and, as we move on to conquering the next set of hurdles, still others build upon our own triumphs.
It's just how it works.