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because HBD has a stable price to it.
Leo goes up and down

I don't think this is a valid answer, every native token of every ecosystem it's used to pay for services, fees and more inside of the native blockchain, if the answer it's volatility only for USDT o USDC Will be use cases and everything else it's useless

yes it is. having as stable price for a service like premium or subscriber content is important.

Leo is built on top of Hive.
HBD is a native token.

You are thinking about blockchains like it is 2017.