Out-competing yields rewards for effort, that doesn't make it necessary. All that's necessary is maintaining. Many small businesses coast by for 30 years with no aspiration to do more.

Japan has had stagnant GDP growth for decades. Growth is not "necessary" as socialist like to project, it's just better. Productivity/innovation increases through growth have drastically improved our quality of life. Meanwhile socialists treat the world as zero-sum, as though everyone started out with a pile of cash which gets divvied up. Redistribution can be good, but you first need to generate the wealth.