I thought the best Monopoly strategy was not to play.

They don't say what the strategy is in the comments (duh) but I seem to remember a similar study from years ago saying the optimal strategy was to always buy if you can.

Meta, but one rule I was surprised to learn: if someone doesn't buy a property when they land on it, it is immediately auctioned off by the bank.

AlphaZero (Google's chess bot) famously started with no 'book knowledge' (e.g. ideas on how to play chess), instead, it learned by playing against itself many, many times over.

Has anyone done something similar to that with Monopoly? (by contrast, the technique used in this video is much more basic; it comes up with some specific rules a player will use, then has those bots play eachother)

It'd be interesting if the strategy would change without the auction rule. I don't think I've ever played with that.