[vsareto]

Few companies are going to pay them differently for that effort, so they'll just likely leave. This situation is probably long-term worse for morale because there's no collective sense of accomplishment and instead everyone's betting their stability on one person.

If someone's too far ahead of everyone else in terms of skill (through their own work or talents), they should be given opportunities to find or create a team with similar skills. Just because you happened to join a team with different skill levels does not mean you're now obligated to teach everyone else. It's great when people decide to teach others when there's a large skill gap, but that should be a personal choice.