Why change the actor who plays Grandpa in the Symbicort commerical?

The change in the actor portraying Grandpa in the Symbicort commercial could be due to various factors, such as contract negotiations, availability, or a desire for a fresh portrayal to resonate with audiences. Additionally, casting decisions may be influenced by market research or feedback to better align the character with the brand's message. Ultimately, such changes aim to maintain viewer engagement and effectively communicate the product's benefits.