Arguably, in heaven all resources are ready and abundant, while on earth everything takes time and effort.

So yeah, if you can just pick a freshly baked pizza from the next tree anytime, why would you need any incentive to work on anything?

On the other hand, on earth, pizzas take time and resources to make. Hence if one person makes pizza, that person may not want to give it to people who simply choose to do nothing all day.

Concluding, this comparison does not really work.