Multiple Stores within 1 store? Is it possible??

I want to actually create a store like Amazon – you know how people can put inside their cart multiple items from multiple people? Well I have some companies that want to list products, like a lot of products……Id like to have some sort of mall for people to shop at like a one stop shop. So when people order the money will go to different companies per product and shipping details and etc.

Is this possible?

Or what other direction should I go for listing hundreds of products from a couple different companies on 1 store without the orders going thru me but them as I will just be a drop shipper?

Almost anything is possible with Open Source code, but Zen Cart is not designed to be a mall straight out of the box.

can this be done with zencart or no?

I need to hire someone for this project...