Your example is an interesting one, because I think it just shows there are consequences for certain types of speech, but that speech is still very much possible.

Kind of like how I can park without feeding the meter, and the "consequences" are just tickets. At no point can my license be revoked if I always pay all the tickets.

So getting back to your analogy, if I use speech to make false claims about a product I will get a hefty fine, but there is nothing physically stopping me from doing exactly the same thing tomorrow.

The speech isn't actually prohibited or "denied" anymore than me parking illegal is, there are just consequences if I choose to do it.