There are exceptions to the notion that competition is good. If we attempt to map out all the exceptions, we will be left with mumbo jumbo. Economic libertarianism is the true death of the brain. Some monopolies are good and any threat to the monopoly is a threat to the consumer.
When it comes to misinformation I always remember when I was a kid I’m the early 90s, another kid told me confidently that the USSR had landed on Mars, gathered rocks, filmed it and returned to earth(it now occurs to me that this homeschooled kid was confusing the real moon landing.) I remember knowing it was bullshit but not having a way to check the facts. The Internet solved that problem. Now, by God , the Internet has recreated the same problem.