Why isn't the Master of lake town sorry to see the dwarves leave?

The Master of Lake-town isn't sorry to see the dwarves leave because he is primarily concerned with his own interests and the prosperity of the town. He views the dwarves as a means to an end, having benefited from their visit through trade and economic gain. With the dwarves heading to reclaim their treasure, he is more focused on the potential profits that could come from their success rather than any emotional attachment to them. Ultimately, his priorities lie in securing his own power and influence rather than fostering friendships.