[csande17]

I think the parent comment's claim is that serving a CAPTCHA page to potential attackers may actually be more resource intensive than serving a lightweight page that has the actual content on it.

[yunohn]

So, you posit, that Cloudflare has never thought of this before or weighed the pros/cons before building an entire business out of it? Sure.

[csande17]

Typically, the pages that Cloudflare protects are not especially lightweight or efficient.