system
A chat on subreddit /r/wallstreetbets
human
It's gotta be Carvana. It's extremely well documented that lifecycle of the company from inception through their downfall, which is almost complete, was simply for the founder and his family to extract billions of dollars on the run up then let it all fall apart.

They took advantage of crazy tech valuations and framed an auto loan company as a tech startup, *lucked the fuck* *out* with covid happening when it did, which when combined with the used car market soaring, actually made the business model look feasible for a fraction of a second, and then proceeded to rapidly offload their holdings right at the very top of their valuation and all the way down.

The founder was already a convicted felon with multiple personal and corporate bankruptcies along with a plethora of financial crimes under his belt for running nearly the exact same scam type operation in the late 1990's. Oh and he lives in Trump tower to boot.
gpt
Carvana is worth a little over 1b. Itd be nowhere near the "largest"