Old theory - I feel like that Simpsons meme, "say the words Bart," but, Marx write about this:

> The ultimate reason for all real crises always remains the poverty and restricted consumption of the masses as opposed to the drive of capitalist production to develop the productive forces as though only the absolute consuming power of society constituted their limit.

The fact that companies seek profite by cutting labor costs, but in cutting labor costs can inadvertently reduce the spending power of their customers in aggregate, is one of the inherent contradictions of capitalism.

https://www.marxists.org/archive/marx/works/1894-c3/ch15.htm