Earlier quoted context omitted.
Why does everything needs to be economically viable?
Because that’s what has traditionally allowed western countries to have a wide availability and inventory of goods vs communist economies.
Economic viability isn't what led to "wide availability and inventory". No, it's imperialism. It's exploitation of the Global South. It's paying slave wages through subsidiaries in West Africa to cocoa farmers while making sure those countries stay poor, for example.
We also wage economic war on our our anointed enemies like Cuba and then use the inevitable result of that economic warfare as a reason why our system is good.