Why is this question so vexing?
True, to spend requires availible goods to be purchased. But the impetus to create is that one expects to profit.
There is also spending on goods that are yet to be created. Financing a dam is a lot easier when it is paid for up front.
I don't think either point of view is correct but that it is like the two sides of a coin.
There was a question?
:-/
Where there is no property there is no justice; a proposition as certain as any demonstration in Euclid
Fools! not to see that what they madly desire would be a calamity to them as no hands but their own could bring