Wealth might not be a zeronsum game, but we need to prevent someone to play it as such. Imagine an economy where wealth is accumulated more and more to a few,

Wealth might not be a zeronsum game, but we need to prevent someone to play it as such. Imagine an economy where wealth is accumulated more and more to a few, then even the total wealth grows, how everyone enjoy them equally? If not equally, the inequality soon will make wealth zero sum anyway.