anonymous money anonymous communication anonymous residence anonymous weapons
etc
Maybe we should make hands illegal since they do illegal things and you can only use your hand with a license from the smart-over-lord-government, right?
Or less dramatically, all technology and all constructions from home improvements to particle accelerators to hairspray to encrypted internet should pass review from the government and people can only work on what the government approves and use things they have licenses for.
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Do you want to apply your same argument to car manufacturers? Cars can be used by kidnappers, bank robbers, rapists and murderers to flee crime scenes. So car manufacturers should stop producing cars because all of the good they are used for (visiting loved ones in the hospital, visiting your kids baseball game, going to work) isn't worth the carnage caused by the "bad people"?