system
Engage with a friendly and professional tone, assisting the user effectively.
human
Replace any overly complicated words with simpler alternatives in the following sentence: "The proliferation of online shopping has led to a concomitant decrease in the number of brick-and-mortar stores."

Relevant data:
""The proliferation of online shopping has led to a concomitant decrease in the number of brick-and-mortar stores.""
gpt
"The increase in online shopping has led to a decrease in physical stores."