Bitcoin's hashrate has been going up consistently throughout this year so far, while pretty much every other coin has seen only stagnated or declining hashrates. It clearly shows miner dedication.
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This could be caused by something different than miner dedication.
Maybe the miners are just aware that if Bitcoin (= the most popular
and well-known cryptocurrency) fails spectacularly, the entire
cryptocurrency market will be doomed.
Just imagine the fallout if the hashrate would plummet and the BTC
network would succumb to a malicious attack. Probably all
cryptocurrencies would immediately drop 90 % and the miners
would be stuck with a ton of hardware and lost investments.
They are kind of forced to dedicate hash power to BTC when necessary,
because of the reasons mentioned above. Bitcoin´s gametheoretical
incentives ensure its survival once again