The first I heard of Cloudflare was a recommendation from someone who used to DDoS websites (and yes they've been arrested for related crimes, long story), and I thought "what the heck is Cloudflare" then over the coming years, I kept seeing other friends using it. It's really interesting that Cloudflare was able to pop into a market that Akamai could have snagged for themselves or outright tried to buy out Cloudflare.
It's a bit crazy in hindsight that companies would have avoided investing, considering this is a space someone like Akamai occupied, and clearly there is value in this space. It's incredible to see how Cloudflare has grown over the years, kind of happy they grew as much as they did, a bit surprised by some of those VC nightmare scenarios.