I see your maths here but Cloudflare hits include any assets, images, and so on so one page views fans out potentially dozens of hits. Cloudflare also includes all bots and non-human hits.
Assuming $0.50 net CPM on one AdSense unit per page view, that would be $70k monthly/$840k yearly revenue. And since operating cost is $100, that's all profit. I'm no AdSense expert but I believe this would be super conservative, maybe an expert could chime in with higher realistic numbers. Even if you don't like advertising there are other ways you could earn money with a site like SteamDB.
Cloudflare stats are inflated. I have a site getting 30k visits a day according to Google Analytics but Cloudflare says it's close to 100k. So I think Cloudflare doesn't filter out bots in their analytics.
I'm not doubting the stats, just saying that Cloudflare is not an accurate gauge of website views and visits. Cloudflare shows 3x the pageviews on my site than Google Analytics.
