There are the same laws for pretty much everything. If somebody buys a car and runs down a crowd of people (not due to some defect in the car) you can't sue the car company and dealership. It is the same as guns. We just had to explicitly have laws around guns because some people wanted guns to be held to a different standard then everything else.
Perfectly happy, sure, but also desperately afraid that they’ll someday be held even partially responsible - which is why they spend millions in lobbying to prevent laws and advertising / outreach to curry favour.
Gun makers are perfectly happy with their guns killing innocent people.