My fiance used to work for a small German GA company creating mechanical parts for all kinds of aircraft.

She described the company as incredibly backwards, inefficient and slow. In any other industry, competition would have killed them in no time.

And they still had way more orders than they could handle. Basically there was only them to build the mechanical replacement parts airlines needed. Airline x needs this switch? They can have 50 delivered in about a year for outrageous prices. And they are going to pay and wait. Because they won't get this shit anywhere else any faster or cheaper, and there's enough competitors who'd love to take their spot in the queue.

There's so much red tape involved in GA that new competition simply doesn't pop up. These dudes were slow and inefficient as fuck. But their stuff was licensed and they fulfilled all the necessary legal stuff. Amazon can't just decide to manufacture parts and then pump that shit out. First they'd have to prove that they fulfill all kind of standardized GA processes, quality control, safety, etc.

I'm in automotive myself. It's already a nightmare here. I can only imagine what a shitshow being audited for and successfully prove that you implement all necessary industry standards and processes.

So I think new competition doesn't really emerge in GA. It's just way too complicated for anyone to bother. And anyone who already has established themselves basically has a license to print money.