Yes, we should actually expect them to spend more time and effort. It’s their job!
Would you be happy with the local plumber spending more time and effort fixing their own water valve or yours? Do you expect construction crews to spend more time or less time and effort when building a concrete bridge as compared to when they pour their own driveway?
These are even examples where we should expect the person to care less about their job than their own personal stuff. Realtors have a fiduciary duty to their client.
Would you be happy with the local plumber spending more time and effort fixing their own water valve or yours? Do you expect construction crews to spend more time or less time and effort when building a concrete bridge as compared to when they pour their own driveway?
These are even examples where we should expect the person to care less about their job than their own personal stuff. Realtors have a fiduciary duty to their client.