What this strategy will also do is allow your broad match campaign to turn into your keyword discovery tool. Using search query reports in your broad match campaign you can discover new keywords to build adgroups around for your exact and phrase match campaigns to test. When budgets shrink, you can dial up the spend on driving sales through more relevant match types like exact and phrase, and dial down the spend on discovering new keywords for account expansion.
If you are working with a very large account that is constantly shifting budgets, launching products, and you have moving goal targets, triplicating campaigns for each match type can cause the size of your account to bulge but it’s the way to go.