1. Walmart operates in many countries, plus their US only revenue might be larger than Amazon's all retail revenue. Plus Google, Apple, Microsoft, Facebook operate in nearly all countries, a much bigger number than Amazon.

2. Twitch is restricted to a niche. Facebook video, YouTube, and even TikTok all have more users.

3. This might be correct but this is a very small market. Microsoft has similar market share in Office Suits.

4. Biggest seller doesn't make a monopoly. If it did, every industry will bave a monopoly.

5. How is AWS a monopoly there, when so many competitors exist, and the likes of Google have humongous internal data centres which might be on the same scale as all of AWS.