Do you buy things you don't want?
https://www.nytimes.com/2009/10/21/business/21auto.html
Answers to your question are nuanced, and fortunes are exchanged in purchases like cars even if customers aren't loyal next purchase(s)
Unfortunately, yes :-(
Of course, at the time I bought it, I wanted it. TBH, it happened more often when I was young, not so much the last 2 decades of my life.
One tactic that some people find helpful when they want to buy a discretionary item is to wait a few days/weeks, and make sure that it's not just a whim that they'd regret.
Political campaigns also get more sophisticated. Scott Adams has an interesting podcast where he breaks down the latest manipulative persuasion techniques used.