All essential workers during this crisis deserve some kind of additional compensation. Wealth redistribution should happen through the government. One company can't do it all themselves. They have a responsibility to both their shareholders and their employees. It they abandon one of those responsibilities they won't be able to do the other one effectively.
Amazon can be just as competitive without being as profitable to its shareholders.
The hundreds of billions that Bezos has pocketed as profit are not essential for Amazon's success. That profit could easily be redirected in to the pockets of Amazon's employees and towards making a safer work environment instead, arguably with a corresponding increase in Amazon's competitive effectiveness.