It's very possible to rectify their description of ETH and can overthrow the decision of SEC. Everything is in paper so if there will be changes, they can do it in paper as well. But right now, I don't think that we'd see that anytime soon because it's just getting started. But if they're going to change their description of ETH as a security instead of a commodity, there will be for sure a lot of impact to its price.
We shouldn't change our perception of ETH from being a security to a commodity. Especially when it's utterly-centralized. The PoS mechanism "kills" it. ETH is now a "corporate coin" where big companies with a lot of money can influence the future direction of the project. You're basically entrusting your ETH to centralized entities. Not to mention, the huge influence Vitalik Buterin has over Ethereum.
If (God forbid) something bad happens to him, Ethereum will be done for good (or at least, it will lose value big time). Talk about being a security. The only real commodity is Bitcoin due to the way it was designed. I have a feeling the SEC will prosecute the Ethereum Foundation due to the sale of "unregistered securities" (the ICO before ETH's launch). Bitcoin never had an ICO or publicly-known founder, so it's safe from harm's way. Lets move on, shall we?
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