This is sort of like how email is based on Internet standards but a large percentage of email users use Gmail. The Internet standards Cloudflare is promoting are open, but Cloudflare has a lot of power due to having so many customers.
(What are some good alternatives to Cloudflare?)
Another way the situation is similar: email delivery is often unreliable and hard to implement due to spam filters. A similar thing seems to be happening to the web.
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