Couldn't that mean that if they make ASIC machines that are built to hack wallets, and what if it becomes a trend to hack bitcoin wallets and millions of people start doing it, and companies start creating very optimized hardware that their only purpose is to brute-force wallets randomly
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the simple answer to that is, if there was a market for such hardware it would already be in existence. actually there is a market for that. in fact I have one myself. it's called an electrical heater. I turn it on and it warms up the room. it does cost money to run though. maybe like 500 watts. it doesnt have any other beneift though other than warming the room.