I&#x27;m not a marketer so correct me if I&#x27;m wrong, but I&#x27;m not sure I agree that it&#x27;s even possible for advertising to bubble in the traditional sense.<p>The biggest budgets are all pretty tightly regulated. They have surprisingly good information on exactly what impact their ad buys are having, and that information informs their allocation.<p>The smaller budgets don&#x27;t necessarily have that, but I assume they consistently churn as businesses open and close. Is this article suggesting the churn of new businesses is going to suddenly drop to zero?<p>How could advertising bubble with that level of transparency?