Again, take the data buying and selling and set it aside. That's kind of like a whole separate thing. Even without data brokers, there is tons of fraud and sna

Again, take the data buying and selling and set it aside. That's kind of like a whole separate thing. Even without data brokers, there is tons of fraud and snake-oil. When you are comparing advertising success, website traffic, email delivery, product usage, etc - actually getting consistent user data between them is a nightmare. Everyone has incentive to pump up their own numbers. And oftentimes the reporting you are engaging in is so complicated that a lot of companies rely on consultants to do all of the work. > I don't think that many companies (buyers) have the guts to stop for - say - 6 months all advertising on a given channel and see what happens. Our company had a broken ad run on LinkedIn for 6 months. It cost us over $100k. The manager's response was "Can we turn them on again until we fix them? I need to spend the budget or I will lose it."