User: McMattNZ

Often the case

On: Amazon Watchers Say the Company Has Accelerated Its Efforts To Sell Its Own Products -- and That's Worrying Regulators Around the World (businessinsider.com)

This is often the case with large companies who don't produce what they sell. Step 1: Sell other peoples products Step 2: Build a large audience doing so Step 3: Create your own products Step 4: Slowly remove other peoples products Step 5: ??? Step 6: Profit