Disparity in ownership of machines is not the main factor that is driving the need for work. It is the un-ending desire (or selling pressure) to have things that require money to buy. Most people work to be able to pay their loans and have things that are perceived to be common needs in their geography and culture.

These "needs" are sometimes enforced by the systems and government so that people don't stay away from the work and "economy" keeps churning. The housing prices could be a way to keep the people working for loan payments.

Instant foods, nursing homes for elderly, creches, roads, commuter trains - are all ways to have more workers and make them focused on work.

You are missing my point; if you have no value other than unthinking manual labour to offer the world, why would the world keep you alive?

"Work" doesn't exist to keep people busy, it exists to keep them alive.