Funny that people view yield farming as 'free money' that doesn't make sense, but when Youtube/Google/TikTok hosts their videos and content for free, it sounds legit.

Standing on the shoulders of giants 🌌
idanlevin.xyz

Well the business is clear there. YouTube makes money on ads

Building getinboxzero.com and sharemint.xyz.

I also run a YouTube channel, "Learn from Open Source": youtube.com/elie2222 

and the business of a DEX/ DeFi app isn't?

DEX earns fees and subsidizes to get liquidity and users, not really different than hosting services by web2 companies

Depends. If there’s a fee for a trade and you earn a dividend then that’s clear where the money is coming from.

Although very different to YouTube.

If you’re getting rewarded for staking it’s also clear where it’s coming from but it’s also clear that many will lose money when price crashes.