If you say what you mean by gaming the system with any of those, Wall Street, Las Vegas, used car sales, maybe I can respond intelligently. As it is, I'm not sure what you're referring to. Most things I think of that would be considered gaming the system to do with those have to do with human rules applied to a system, instead of emergent market economics, and that's what I was referring to.
There is gaming of markets, but I think generally if it's not based on some regulation, it's because of information asymmetry (which is a market inefficiency).
All I was trying to point out in the prior comment is that there are different kinds of incentives. There are incentives that are constructed, and there are incentives that are natural. Constructed incentives are much easier to game. Natural incentives are emergent. Microsoft is incentivized to have good security for their OS now by the market in general, because it hurts them to not have good security (compared the the bast, where they could get away with lax security until it became a problem). That's emergent from the market and people deciding to use or not use their product. I wouldn't consider that "gaming the system", and if they did game it by talking a lot about security but not actually doing much, eventually the market should note that and respond appropriately.
Alternatively, Microsoft can reduce their tax burden by shifting business entities to different countries and shuffling how it appears their profit is created, so it's registered in a country with very little taxes, leading them to pay fewer taxes (not that they do, I don't know. I believe Apple and Google are reputed to do this). That's based on rules set by people, such as country boundaries and tax rates. Doing this could be considered "gaming the tax system". It requires specific changes to the rules to fix, it won't just shift naturally.
To me it appeared the comment you were responding to originally was using "incentive" in the pure form, meaning "benefit for doing so", and it appeared you were referring to incentive in the regulatory sense, where it's a human construction to influence behavior, but that's only a subset of the meaning.