I had a friend who is a believer who used to work for Miller Brewing. They were the largest employer in this town and the pay was excellent.
Was he responsible for folks getting drunk? Was it a sin for him to participate in producing the beer?
Did he cause them to drink no but did he help supply it for them yes! Did he help them get drunk and thus participate in their sin? God knows that one! God would have convicted him of it and his sould would have been vexed daily if he had, so was it?