I could call them, tell them I see their ad, ask questions then call again and again and again and again. I just read one may call a company as often as one wants.
Before the ad, you had no brand awareness at all of Liberty Mutual. Now, you know their name enough to call them out specifically in a Hacker News comment. Your propensity to buy has improved a lot just based on that fact, regardless of whether you consciously want to avoid them now.