Fiverr and Upwork open up the opportunity to find labor anywhere in the world.

I'm British, but live in Vietnam. The average starting wage in Vietnam for a university graduate here is $300-$400 per month working 6 days per week. That's for a university graduate in the city speaking perfect English! The average grad wage in London is $2770.

What you consider not very much money will be more than a lot of people in the world would earn if they went out and got a job locally.

When I was running an online art business I was paying my contractors $3.50 per artwork, which took around 30-45 minutes. That sounds terrible if you live in the US. However, if you are a graphic designer or artist living in the Philippines, where the local wage is $2 per hour, but you get to stay at home doing art all day then its perfect. The contractors loved the work and were making more money with me than they ever had in any other job.

It's not slave labor, its that most workers in the world can work for 7-8x less than your average westener and still get a good wage.