It's poorly written but you've misread the intended meaning. It says that they learned from illicit transactions on Craigslist. And then wanted to replicate that on their own platform.
They've edited a correction:
> They realized money could be made, and built a website to let other people do the same thing, through them, not Craig. Good on them, but renting a space is regulated differently than selling a used couch for many good reasons. What you could once attribute to the same quaint naivety of setting up a lemonade stand, you can no longer. The people who funded them knew better, and eventually, so did they.
They've edited a correction:
> They realized money could be made, and built a website to let other people do the same thing, through them, not Craig. Good on them, but renting a space is regulated differently than selling a used couch for many good reasons. What you could once attribute to the same quaint naivety of setting up a lemonade stand, you can no longer. The people who funded them knew better, and eventually, so did they.