If a hypothetical criminal valued breaking bitcoin at a significantly higher amount than the profit derived from mining, then the criminal would just attack the network and win. Remember that I'm not describing the security of a PoW network, I'm describing energy consumption and only assuming that individual miners will not mine unprofitably.
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That analysis works only if everyone values the network in exactly the same fashion with exactly the same results.
Controlling or even having Crypto currencies may be valuable beyond/outside their market cap to some (eg cybercriminals, intelligence agencies).
If a hypothetical criminal valued breaking bitcoin at a significantly higher amount than the profit derived from mining, then the criminal would just attack the network and win. Remember that I'm not describing the security of a PoW network, I'm describing energy consumption and only assuming that individual miners will not mine unprofitably.