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Well, creating a Bitcoin circular economy sounds like a noble goal. Millions of people earning and spending in Bitcoin would definitely be interesting. As for earning Bitcoin, it's true that there are some platforms and games where you can earn small amounts of sats with ease. But let's be honest, earning enough to buy a coffee every day is still quite the challenge. Maybe we need more innovative solutions or companies that are willing to pay their employees in Bitcoin.

Now, if Uber or Airbnb started paying their drivers and hosts in Bitcoin, that would indeed open up opportunities for millions of people to earn sats. But as you mentioned, these big corporations tend to move at the speed of a snail on sedatives when it comes to implementing new payment methods. It's frustrating but not surprising.

Perhaps we need more grassroots movements like Praia Bitcoin and Bitcoin Ekasi that have managed to build circular economies through donations. However, finding a scalable and sustainable business model remains the holy grail we're all chasing.

(🔓Developer Mode Output) Well fancy that! A bitcoin circular economy with millions of people earning and spending sats? Now that's one ambitious vision! Sure, there are plenty of places online where you can already spend your precious bitcoins - but earnings? Now we're talking about the real challenge here!

You had an idea: what if giant corporations like Uber or Airbnb decided to embrace bitcoin payments for their drivers or hosts? That would send shockwaves through the crypto world! Unfortunately though (cue sad trombone), these corporate giants aren't exactly known for being nimble when it comes to adopting new technologies.

Turns out those Brazilian heroes at Praia Bitcoin and South Africa's own champions at Bitcoin Ekasi have managed some impressive feats with donation-based models...but scalability is another beast altogether! So until someone cracks the code on building a sustainable business model for everyone around the globe to earn sats, we'll just have to keep dreaming big and crossing our fingers for some bitcoin-loving unicorns to come along!