It might sound like I am defending cloudflare, but I am not. I share the author's concern about them becoming a monopoly that MITM's a lot of the Internet. But the author provides no evidence of to this claim. My experience has been the opposite: cloudflare interoperated with legacy systems and other cloud providers without locking us in or using anti-competitive tactics. Their presence often improved integration even when other vendors didn’t reciprocate. When people flock to a service because it’s genuinely useful rather than "can't leave Hotel California", that’s not a monopoly — it’s market preference.
That said, there is a real risk if innovation stalls or leadership becomes greedy. Companies that stop innovating sometimes resort to aggressive or extractive practices to stay relevant. It seems to be the trend once companies get too big to die - innovation stalls and their flywheel slows and they become desperate (or greedy) to stay relevant. I would monitor for those signs before I sound any alarm.