Alternative narrative: Online services are a winner take all market, so early players who survived the dot com crash due to great product leveraged that to gain monopoly share. Without government intervention they will dominate these markets to the detriment of the consumer (and the abuse of their data/privacy)

Ok, but that's just not true, at least in my case. I've tried to stop using Google multiple times. I still use Google not because of monopoly, but because every time I use DuckDuckGo or Bing or what have you, I wish I was using Google.