In the late 90s and early 2000s the NSA and other US intelligence agencies underwent massive efforts to basically privatize the gathering of intelligence. Its a lot easier to fund your "total information awarness" initiatives via public markets and private investors than to ask congress for money to do so. So they did just that.

"In 2008, the Department of Homeland Security (DHS) contacted Unspam Technologies, asking, "Do you have any idea how valuable the data you have is?" The DHS' email served as the impetus for Cloudflare, a technology company Prince co-founded with Holloway and fellow Harvard Business School graduate Michelle Zatlyn the following year."

--Matthew Prince's Wikipedia page.

Dont for a second think cloudflare's generous free tier offerings are out of the goodness of their heart. They're a giant fkin MiTM project for the US governemnt. And of course, cloudflare isn't the only one.