This is effectively lying and fraud... That would still be illegal under libertarian ideals. The current system isn't the libertarian ideal and still isn't working... And while civil actions may be limited, that doesn't exclude the Govt coming in with more teeth when it comes to systemic fraud.
Also, with more clear marketing and without unfair advantages, competing products and companies should be able to enter the market.
Also, with more clear marketing and without unfair advantages, competing products and companies should be able to enter the market.