but why? the Donators and VIP members didn't donate in dollars but in bitcoin.
Good point!
Indeed, companies or tools that get earning in cryptocurrencies, Bitcoin, Ethereum or whatever else don't lose if they use what they receive as payments or donations.
I understand the value in fiat currencies will be big, obviously and undeniable but as said, for donators, they have huge money and if they are companies like above, they can donate if they want to contribute.
If you know the last donator (with 10
BTC) is Claymore, it makes sense. In 2017, Ethereum mining is very hot and Claymore is the mining tool for Ethereum miners.
The same goes for Bitcoin tumbler services like Chip Mixer.
The same goes for your trading fees: If you trade Bitcoin to USDT, pay your trading fees in
BTC or USDT. If you trade ETH to BTC, pay your trading fee in ETH or
BTC. Exchanges earn such money, depend on your trading. They earn more if you trade
BTC, less if you trade shit altcoins. Trading fees are not fixed in fiat or stable coin.
Difference is officially from taker and maker fee (%), not from trading pair but in fiat value, trading pair makes sense.