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Sure they can.
Ofc there was definitely a reason, they monitor metrics, trading volume, development, regulations ... They can also do it after adjusting their internal policies. They make the call.

The main point is that they can do it so its better to be prepared then not.

They can also do it after adjusting their internal policies. They make the call.

You are right though. Especially if they intend to attack a particular currency/coin.

The SEC will demand that everything gets delisted … except Blackrock Bitcoin of course and any other coin they create.

More like they are turning to a regulatory authority for CEX?
That would be very bad for alt coins but I don't see it happening.

Hive needs to create their own way to convert Hive to Bitcoin.
And they are doing that already. A Decentralized crypto platform like Hive needs to be 100% Self Sufficient… it cannot rely on any Centralized Exchange.