Where can one buy OEM Nissan parts when Nissan has discontinued the parts?

Are there any companies that stock the original or surplus OEM parts or bought up extra in bulk and resell them?

Have tried the numerous nissan parts internet suppliers and have tried various dealerships trying to leverage their locator system.

Somewhere out there, someone has to have the new parts in a bin or a shelf.

Solutions?

Want new, replacement OEM, not used and not via junk yards.