> they just... stop trying
This foundational premise seems flawed. Surely there are pressures but it's a privilege hypothesis used to write the piece so the objection is important.
Once you achieve notoriety the world changes around you. Not only that but by the time achieve notoriety the world already changed around you. The lead time to novel prize is high.
Just to be concrete about one way the world changes is that you're no longer a great student with time to while away. Now everybody wants to congratulate you and learn your theory from you. They won't leave you the f** alone. When you were just some random promising grad student, you had mental quiet and peace. Academia, industries, responsibilities, they take that away.
And let's be fair, if you've done Nobel worthy work, then you've contributed enough that you deserve to just slack off and be left in peace for the rest of your life.