Final answer:
Santiago wants the crystal merchant to serve tea to attract more customers, but the merchant is reluctant due to fear of change and skepticism about its effectiveness.
Step-by-step explanation:
Santiago wants the crystal merchant to begin serving tea in his shop because he believes it will attract more customers and increase business. He sees the potential for the tea to create a welcoming and comfortable atmosphere, which would encourage people to visit the shop and potentially make purchases.
The merchant is reluctant to accept Santiago's suggestion because he fears change and is skeptical about the effectiveness of serving tea. He is used to his current way of doing business and does not want to take any risks or invest in something new. He is content with the status quo and does not believe that serving tea will make a significant difference.
Santiago suggests serving tea to attract customers and improve business, while the merchant's reluctance stems from fear of change and unforeseen issues.