Attacking bitcoin uses energy but does not degrade the computer or the energy infrastructure required to do the attack. Attacking PoS ethereum degrades the reso

Attacking bitcoin uses energy but does not degrade the computer or the energy infrastructure required to do the attack. Attacking PoS ethereum degrades the resource you use to attack. When bitcoin was created there weren't hashpower markets where you could attack a chain without ever having invested in it and then move on the next minute, your hardware investment still earning you money. I think satoshi thought there would only be one chain and the game theory with many is different.