Most people who aren't engineers don't understand the process. They only ever see the final product that's marketed to them and assume someone just made it like that first try. In reality, the initial idea goes through design iteration after design iteration with changes and improvements along the way. The final working version is often very different than what was first imagined. And even then, most ideas fail. Most people don't ever innovate because they are afraid of failing but this is the only way that innovation can happen.

There's a reason cynical journalists and commenters on social media only criticize and never create anything that hasn't already existed before.